<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019d20ca-56cb-7b5b-b499-7d34ecc463b6,g:450aa8d6-050f-4449-abc2-aa91c719245b-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimincomestatement" xlink:type="simple" xlink:href="wpp-20260630.xsd#Unauditedcondensedconsolidatedinterimincomestatement"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimincomestatement" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_019d20ca-5791-75c4-86e7-382f5889d08c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019d20ca-5791-7a35-841e-a3e176eac515" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_019d20ca-5791-75c4-86e7-382f5889d08c" xlink:to="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019d20ca-5791-7a35-841e-a3e176eac515" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_019d20ca-5791-7c05-b294-ab077637c972" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_019d20ca-5791-75c4-86e7-382f5889d08c" xlink:to="loc_ifrs-full_ProfitLossBeforeTax_019d20ca-5791-7c05-b294-ab077637c972" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_019d20ca-5791-740f-9068-11cc8720bd96" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeneralAndAdministrativeExpense_019d20ca-5791-71fe-81e2-c3ed9b1ccea7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_019d20ca-5791-740f-9068-11cc8720bd96" xlink:to="loc_ifrs-full_GeneralAndAdministrativeExpense_019d20ca-5791-71fe-81e2-c3ed9b1ccea7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossProfit_019d20ca-5791-7b3e-8174-9375fa67d3bb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossProfit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_019d20ca-5791-740f-9068-11cc8720bd96" xlink:to="loc_ifrs-full_GrossProfit_019d20ca-5791-7b3e-8174-9375fa67d3bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossProfit_019d20ca-5791-7f22-91a6-8f55ef3bca82" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_019d20ca-5791-7d7b-9905-01348c18466e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_GrossProfit_019d20ca-5791-7f22-91a6-8f55ef3bca82" xlink:to="loc_ifrs-full_Revenue_019d20ca-5791-7d7b-9905-01348c18466e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CostOfSales_019d20ca-5791-7cf0-804d-008c5c06e159" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CostOfSales"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_GrossProfit_019d20ca-5791-7f22-91a6-8f55ef3bca82" xlink:to="loc_ifrs-full_CostOfSales_019d20ca-5791-7cf0-804d-008c5c06e159" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_019d20ca-5791-72c9-b2fd-89edc2f1de0e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_ProfitLossBeforeInterestAndTaxation_019d20ca-5791-7015-8756-ea9520f87dda" xlink:href="wpp-20260630.xsd#wpp_ProfitLossBeforeInterestAndTaxation"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019d20ca-5791-72c9-b2fd-89edc2f1de0e" xlink:to="loc_wpp_ProfitLossBeforeInterestAndTaxation_019d20ca-5791-7015-8756-ea9520f87dda" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_RevaluationAndRetranslationOfFinancialInstruments_019d20ca-5791-7c12-8f1e-1e008a18d85c" xlink:href="wpp-20260630.xsd#wpp_RevaluationAndRetranslationOfFinancialInstruments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019d20ca-5791-72c9-b2fd-89edc2f1de0e" xlink:to="loc_wpp_RevaluationAndRetranslationOfFinancialInstruments_019d20ca-5791-7c12-8f1e-1e008a18d85c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceCosts_019d20ca-5791-750e-8b5c-73844fb11952" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceCosts"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019d20ca-5791-72c9-b2fd-89edc2f1de0e" xlink:to="loc_ifrs-full_FinanceCosts_019d20ca-5791-750e-8b5c-73844fb11952" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncome_019d20ca-5791-7f69-b8f1-99693dce3a47" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceIncome"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019d20ca-5791-72c9-b2fd-89edc2f1de0e" xlink:to="loc_ifrs-full_FinanceIncome_019d20ca-5791-7f69-b8f1-99693dce3a47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_ProfitLossBeforeInterestAndTaxation_019d20ca-5791-7c5b-a67a-66094d2ecdc1" xlink:href="wpp-20260630.xsd#wpp_ProfitLossBeforeInterestAndTaxation"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_019d20ca-5791-7ef4-8f11-9bb729e37a4e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_ProfitLossBeforeInterestAndTaxation_019d20ca-5791-7c5b-a67a-66094d2ecdc1" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_019d20ca-5791-7ef4-8f11-9bb729e37a4e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_019d20ca-5791-7c02-8393-7dd6996f6d39" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_ProfitLossBeforeInterestAndTaxation_019d20ca-5791-7c5b-a67a-66094d2ecdc1" xlink:to="loc_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_019d20ca-5791-7c02-8393-7dd6996f6d39" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/UnauditedcondensedconsolidatedinterimincomestatementAlternativeCalculation" xlink:type="simple" xlink:href="wpp-20260630.xsd#UnauditedcondensedconsolidatedinterimincomestatementAlternativeCalculation"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/UnauditedcondensedconsolidatedinterimincomestatementAlternativeCalculation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_019d20ca-5791-72cf-9fd7-a6da99732576" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent_019d20ca-5791-7791-8e92-5e9a025b77f3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_019d20ca-5791-72cf-9fd7-a6da99732576" xlink:to="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent_019d20ca-5791-7791-8e92-5e9a025b77f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_019d20ca-5791-7871-89fc-6f3332dc6ec5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_019d20ca-5791-72cf-9fd7-a6da99732576" xlink:to="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_019d20ca-5791-7871-89fc-6f3332dc6ec5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimstatementofcomprehensiveincome" xlink:type="simple" xlink:href="wpp-20260630.xsd#Unauditedcondensedconsolidatedinterimstatementofcomprehensiveincome"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimstatementofcomprehensiveincome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7e48-8b56-217fbef9403a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments_019d20ca-5791-75f9-95db-638b09d249b0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7e48-8b56-217fbef9403a" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments_019d20ca-5791-75f9-95db-638b09d249b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_019d20ca-5791-7357-be7d-3806765ae220" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome_019d20ca-5791-7cac-a7a2-63cd42663ae9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_019d20ca-5791-7357-be7d-3806765ae220" xlink:to="loc_ifrs-full_OtherComprehensiveIncome_019d20ca-5791-7cac-a7a2-63cd42663ae9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_019d20ca-5791-7e74-a75e-2b1648f67a16" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_019d20ca-5791-7357-be7d-3806765ae220" xlink:to="loc_ifrs-full_ProfitLoss_019d20ca-5791-7e74-a75e-2b1648f67a16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome_019d20ca-5791-7057-8655-acc1b5ffe593" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-77d5-84bc-4f7e1c50ef63" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncome_019d20ca-5791-7057-8655-acc1b5ffe593" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-77d5-84bc-4f7e1c50ef63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7613-a292-107785ffb6f6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncome_019d20ca-5791-7057-8655-acc1b5ffe593" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7613-a292-107785ffb6f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7824-83ce-b1ec95169988" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax_019d20ca-5791-77e8-a51a-531e65030c72" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7824-83ce-b1ec95169988" xlink:to="loc_ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax_019d20ca-5791-77e8-a51a-531e65030c72" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax_019d20ca-5791-746e-9c65-a902a58e5c34" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7824-83ce-b1ec95169988" xlink:to="loc_ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax_019d20ca-5791-746e-9c65-a902a58e5c34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_019d20ca-5791-7610-953e-a8a8403029b1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7824-83ce-b1ec95169988" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_019d20ca-5791-7610-953e-a8a8403029b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges_019d20ca-5791-7ed1-8529-e3fce61877f3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7824-83ce-b1ec95169988" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges_019d20ca-5791-7ed1-8529-e3fce61877f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnCashFlowHedgesNetOfTax_019d20ca-5791-7a2c-8ec0-3dcce4a8b053" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnCashFlowHedgesNetOfTax"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_019d20ca-5791-7824-83ce-b1ec95169988" xlink:to="loc_ifrs-full_GainsLossesOnCashFlowHedgesNetOfTax_019d20ca-5791-7a2c-8ec0-3dcce4a8b053" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/UnauditedcondensedconsolidatedinterimstatementofcomprehensiveincomeAlternativeCalculation" xlink:type="simple" xlink:href="wpp-20260630.xsd#UnauditedcondensedconsolidatedinterimstatementofcomprehensiveincomeAlternativeCalculation"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/UnauditedcondensedconsolidatedinterimstatementofcomprehensiveincomeAlternativeCalculation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_019d20ca-5791-73b7-8631-57c83d7353b8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_019d20ca-5791-7e4e-b782-0a1eefceeebf" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_019d20ca-5791-73b7-8631-57c83d7353b8" xlink:to="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_019d20ca-5791-7e4e-b782-0a1eefceeebf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_019d20ca-5791-708a-8f58-587d38688113" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_019d20ca-5791-73b7-8631-57c83d7353b8" xlink:to="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_019d20ca-5791-708a-8f58-587d38688113" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimcashflowstatement" xlink:type="simple" xlink:href="wpp-20260630.xsd#Unauditedcondensedconsolidatedinterimcashflowstatement"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimcashflowstatement" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7bbe-a0f6-a59244d6fda8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AcquisitionsClassifiedAsInvestingActivities_019d20ca-5791-7466-bfef-6f43746c946f" xlink:href="wpp-20260630.xsd#wpp_AcquisitionsClassifiedAsInvestingActivities"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7bbe-a0f6-a59244d6fda8" xlink:to="loc_wpp_AcquisitionsClassifiedAsInvestingActivities_019d20ca-5791-7466-bfef-6f43746c946f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_DisposalsOfInvestmentsAndSubsidiariesClassifiedAsInvestingActivities_019d20ca-5791-7647-8dcd-298fed84c66f" xlink:href="wpp-20260630.xsd#wpp_DisposalsOfInvestmentsAndSubsidiariesClassifiedAsInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7bbe-a0f6-a59244d6fda8" xlink:to="loc_wpp_DisposalsOfInvestmentsAndSubsidiariesClassifiedAsInvestingActivities_019d20ca-5791-7647-8dcd-298fed84c66f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019d20ca-5791-7bb2-82dd-1940aad4a4e5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7bbe-a0f6-a59244d6fda8" xlink:to="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019d20ca-5791-7bb2-82dd-1940aad4a4e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_019d20ca-5791-7899-b149-7d376a74bbb4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7bbe-a0f6-a59244d6fda8" xlink:to="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_019d20ca-5791-7899-b149-7d376a74bbb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019d20ca-5791-7233-9c69-8fc6340840b1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7bbe-a0f6-a59244d6fda8" xlink:to="loc_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019d20ca-5791-7233-9c69-8fc6340840b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_019d20ca-5791-7d5b-8f15-529818ff6e86" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7e0f-83b6-a110410277d5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_019d20ca-5791-7d5b-8f15-529818ff6e86" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7e0f-83b6-a110410277d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-7e7e-b706-bac23523eaab" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_019d20ca-5791-7d5b-8f15-529818ff6e86" xlink:to="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-7e7e-b706-bac23523eaab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7d08-be05-62b9b5434324" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_019d20ca-5791-7d5b-8f15-529818ff6e86" xlink:to="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_019d20ca-5791-7d08-be05-62b9b5434324" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_019d20ca-5791-75ba-aed2-f46afc336244" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_019d20ca-5791-75ba-aed2-f46afc336244" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries_019d20ca-5791-7adc-8668-9cc214be7287" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries_019d20ca-5791-7adc-8668-9cc214be7287" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_019d20ca-5791-7f6f-8e9d-44af58bede13" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_019d20ca-5791-7f6f-8e9d-44af58bede13" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019d20ca-5791-734e-a106-aab4a717c426" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019d20ca-5791-734e-a106-aab4a717c426" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019d20ca-5791-7ff4-8bc6-44fd883bf6ad" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019d20ca-5791-7ff4-8bc6-44fd883bf6ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_ProceedsRepaymentsOfBorrowingRelatedDerivatives_019d20ca-5791-73f4-b890-2fc63ff70577" xlink:href="wpp-20260630.xsd#wpp_ProceedsRepaymentsOfBorrowingRelatedDerivatives"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_wpp_ProceedsRepaymentsOfBorrowingRelatedDerivatives_019d20ca-5791-73f4-b890-2fc63ff70577" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_PaymentsForFinancingAndShareIssueCosts_019d20ca-5791-70c9-8d71-a370d9caeed7" xlink:href="wpp-20260630.xsd#wpp_PaymentsForFinancingAndShareIssueCosts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_wpp_PaymentsForFinancingAndShareIssueCosts_019d20ca-5791-70c9-8d71-a370d9caeed7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities_019d20ca-5791-7507-8c4e-533d90f70dd5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_019d20ca-5791-71a9-b07e-150bb2c51a02" xlink:to="loc_ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities_019d20ca-5791-7507-8c4e-533d90f70dd5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimbalancesheet" xlink:type="simple" xlink:href="wpp-20260630.xsd#Unauditedcondensedconsolidatedinterimbalancesheet"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/Unauditedcondensedconsolidatedinterimbalancesheet" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-7687-a1e8-c43182c062f7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssuedCapital_019d20ca-5791-7563-a08e-a751de897321" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapital"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-7687-a1e8-c43182c062f7" xlink:to="loc_ifrs-full_IssuedCapital_019d20ca-5791-7563-a08e-a751de897321" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SharePremium_019d20ca-5791-747b-94fa-ea25156618ac" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SharePremium"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-7687-a1e8-c43182c062f7" xlink:to="loc_ifrs-full_SharePremium_019d20ca-5791-747b-94fa-ea25156618ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReserves_019d20ca-5791-7584-b495-79b553adcd49" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-7687-a1e8-c43182c062f7" xlink:to="loc_ifrs-full_OtherReserves_019d20ca-5791-7584-b495-79b553adcd49" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasuryShares_019d20ca-5791-78a5-9c0a-9c932d67ae88" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TreasuryShares"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-7687-a1e8-c43182c062f7" xlink:to="loc_ifrs-full_TreasuryShares_019d20ca-5791-78a5-9c0a-9c932d67ae88" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarnings_019d20ca-5791-783c-a62b-185b7ece0510" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarnings"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-7687-a1e8-c43182c062f7" xlink:to="loc_ifrs-full_RetainedEarnings_019d20ca-5791-783c-a62b-185b7ece0510" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019d20ca-5791-7865-bcc2-1780ffe0a96a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-78b9-8f3e-a05022d5410d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_Equity_019d20ca-5791-7865-bcc2-1780ffe0a96a" xlink:to="loc_ifrs-full_EquityAttributableToOwnersOfParent_019d20ca-5791-78b9-8f3e-a05022d5410d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterests_019d20ca-5791-7df7-bcfa-52259a507e7e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterests"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_Equity_019d20ca-5791-7865-bcc2-1780ffe0a96a" xlink:to="loc_ifrs-full_NoncontrollingInterests_019d20ca-5791-7df7-bcfa-52259a507e7e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssetsLiabilities_019d20ca-5791-7f32-b510-160d0630e854" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssetsLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets_019d20ca-5791-7bbd-b71e-025564452795" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssetsLiabilities_019d20ca-5791-7f32-b510-160d0630e854" xlink:to="loc_ifrs-full_CurrentAssets_019d20ca-5791-7bbd-b71e-025564452795" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7536-9b94-4665ab5489a8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssetsLiabilities_019d20ca-5791-7f32-b510-160d0630e854" xlink:to="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7536-9b94-4665ab5489a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-778b-96d2-b762713afe2c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LongtermBorrowings_019d20ca-5791-7f8e-a1eb-fe7c75bcbffb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-778b-96d2-b762713afe2c" xlink:to="loc_ifrs-full_LongtermBorrowings_019d20ca-5791-7f8e-a1eb-fe7c75bcbffb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_ProvisionsForLiabilitiesAndNonCurrentCharges_019d20ca-5791-79db-ab66-a3c14ac73e8d" xlink:href="wpp-20260630.xsd#wpp_ProvisionsForLiabilitiesAndNonCurrentCharges"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-778b-96d2-b762713afe2c" xlink:to="loc_wpp_ProvisionsForLiabilitiesAndNonCurrentCharges_019d20ca-5791-79db-ab66-a3c14ac73e8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentPayables_019d20ca-5791-72eb-b29a-34e07fd4f823" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentPayables"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-778b-96d2-b762713afe2c" xlink:to="loc_ifrs-full_NoncurrentPayables_019d20ca-5791-72eb-b29a-34e07fd4f823" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentProvisionsForEmployeeBenefits_019d20ca-5791-7e6a-9e51-6bba9afefec8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentProvisionsForEmployeeBenefits"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-778b-96d2-b762713afe2c" xlink:to="loc_ifrs-full_NoncurrentProvisionsForEmployeeBenefits_019d20ca-5791-7e6a-9e51-6bba9afefec8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilities_019d20ca-5791-754a-b6ff-77b6aca7053e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-778b-96d2-b762713afe2c" xlink:to="loc_ifrs-full_DeferredTaxLiabilities_019d20ca-5791-754a-b6ff-77b6aca7053e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities_019d20ca-5791-778b-97ae-cbb5554a9b77" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-778b-96d2-b762713afe2c" xlink:to="loc_ifrs-full_NoncurrentLeaseLiabilities_019d20ca-5791-778b-97ae-cbb5554a9b77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7151-88f7-29edcdded7ef" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables_019d20ca-5791-79fc-b3d2-fcde02051b8b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7151-88f7-29edcdded7ef" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayables_019d20ca-5791-79fc-b3d2-fcde02051b8b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShorttermBorrowings_019d20ca-5791-7bc6-8853-d64eb18f34f2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermBorrowings"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7151-88f7-29edcdded7ef" xlink:to="loc_ifrs-full_ShorttermBorrowings_019d20ca-5791-7bc6-8853-d64eb18f34f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxLiabilitiesCurrent_019d20ca-5791-7243-891c-c552ada3bbbb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7151-88f7-29edcdded7ef" xlink:to="loc_ifrs-full_CurrentTaxLiabilitiesCurrent_019d20ca-5791-7243-891c-c552ada3bbbb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities_019d20ca-5791-7394-9a31-687765aa1371" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLeaseLiabilities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7151-88f7-29edcdded7ef" xlink:to="loc_ifrs-full_CurrentLeaseLiabilities_019d20ca-5791-7394-9a31-687765aa1371" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_ProvisionsForLiabilitiesAndCurrentCharges_019d20ca-5791-7f2f-8b0b-b4fdf5c8dd4f" xlink:href="wpp-20260630.xsd#wpp_ProvisionsForLiabilitiesAndCurrentCharges"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7151-88f7-29edcdded7ef" xlink:to="loc_wpp_ProvisionsForLiabilitiesAndCurrentCharges_019d20ca-5791-7f2f-8b0b-b4fdf5c8dd4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets_019d20ca-5791-7ed7-9a07-4f2876ba1a26" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxAssetsCurrent_019d20ca-5791-789b-ac40-869f010a60da" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxAssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_019d20ca-5791-7ed7-9a07-4f2876ba1a26" xlink:to="loc_ifrs-full_CurrentTaxAssetsCurrent_019d20ca-5791-789b-ac40-869f010a60da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivables_019d20ca-5791-7fef-a1aa-5ce866d70113" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_019d20ca-5791-7ed7-9a07-4f2876ba1a26" xlink:to="loc_ifrs-full_TradeAndOtherCurrentReceivables_019d20ca-5791-7fef-a1aa-5ce866d70113" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents_019d20ca-5791-7224-bc9f-c115e89103c8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_019d20ca-5791-7ed7-9a07-4f2876ba1a26" xlink:to="loc_ifrs-full_CashAndCashEquivalents_019d20ca-5791-7224-bc9f-c115e89103c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets_019d20ca-5791-70be-a3fc-af3da20c4302" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_019d20ca-5791-7ed7-9a07-4f2876ba1a26" xlink:to="loc_ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets_019d20ca-5791-70be-a3fc-af3da20c4302" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentReceivables_019d20ca-5791-732c-8a0d-bc0cbe977ada" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentReceivables"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_NoncurrentReceivables_019d20ca-5791-732c-8a0d-bc0cbe977ada" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Goodwill_019d20ca-5791-73d1-9177-8cba8da432ec" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_Goodwill_019d20ca-5791-73d1-9177-8cba8da432ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment_019d20ca-5791-7e0e-84ce-166ccc6ed5a2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_PropertyPlantAndEquipment_019d20ca-5791-7e0e-84ce-166ccc6ed5a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_019d20ca-5791-7023-8511-76e74659973f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_019d20ca-5791-7023-8511-76e74659973f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RightofuseAssets_019d20ca-5791-795b-96da-c66bb29a4e5c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssets"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_RightofuseAssets_019d20ca-5791-795b-96da-c66bb29a4e5c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxAssetsNoncurrent_019d20ca-5791-7c5b-884c-e02e3b063449" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxAssetsNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_CurrentTaxAssetsNoncurrent_019d20ca-5791-7c5b-884c-e02e3b063449" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill_019d20ca-5791-7a33-9be8-e56fc2844cb0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill_019d20ca-5791-7a33-9be8-e56fc2844cb0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxAssets_019d20ca-5791-7034-91b0-6d4569f2b26c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxAssets"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_DeferredTaxAssets_019d20ca-5791-7034-91b0-6d4569f2b26c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod_019d20ca-5791-7743-b4f7-673c9411c3c2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-7c5a-870e-241f100f0edf" xlink:to="loc_ifrs-full_InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod_019d20ca-5791-7743-b4f7-673c9411c3c2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetAssetsLiabilities_019d20ca-5791-73fd-b5f5-17e97e9cf250" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetAssetsLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-769a-94bf-877c7be21219" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NetAssetsLiabilities_019d20ca-5791-73fd-b5f5-17e97e9cf250" xlink:to="loc_ifrs-full_NoncurrentAssets_019d20ca-5791-769a-94bf-877c7be21219" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets_019d20ca-5791-7a31-b35d-30bc7eb2f4d1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NetAssetsLiabilities_019d20ca-5791-73fd-b5f5-17e97e9cf250" xlink:to="loc_ifrs-full_CurrentAssets_019d20ca-5791-7a31-b35d-30bc7eb2f4d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7bc9-b4c0-6b54b508149c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NetAssetsLiabilities_019d20ca-5791-73fd-b5f5-17e97e9cf250" xlink:to="loc_ifrs-full_CurrentLiabilities_019d20ca-5791-7bc9-b4c0-6b54b508149c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-7aba-9d82-89f2f797cab2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NetAssetsLiabilities_019d20ca-5791-73fd-b5f5-17e97e9cf250" xlink:to="loc_ifrs-full_NoncurrentLiabilities_019d20ca-5791-7aba-9d82-89f2f797cab2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/SegmentalanalysisContributionsbyReportableSegmentsDetails" xlink:type="simple" xlink:href="wpp-20260630.xsd#SegmentalanalysisContributionsbyReportableSegmentsDetails"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/SegmentalanalysisContributionsbyReportableSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_019fa3dd-2603-7878-b75b-62d56ece2e80" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_HeadlineOperatingProfitLoss_019fa3dd-2603-767c-bf3a-d66298459c64" xlink:href="wpp-20260630.xsd#wpp_HeadlineOperatingProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019fa3dd-2603-7878-b75b-62d56ece2e80" xlink:to="loc_wpp_HeadlineOperatingProfitLoss_019fa3dd-2603-767c-bf3a-d66298459c64" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_019fa3dd-2603-7021-81e4-948b1ac3abe7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019fa3dd-2603-7878-b75b-62d56ece2e80" xlink:to="loc_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_019fa3dd-2603-7021-81e4-948b1ac3abe7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustingItemsWithinIFRSOperatingProfit_019fa3dd-2603-7c46-8875-65b7a491d595" xlink:href="wpp-20260630.xsd#wpp_AdjustingItemsWithinIFRSOperatingProfit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019fa3dd-2603-7878-b75b-62d56ece2e80" xlink:to="loc_wpp_AdjustingItemsWithinIFRSOperatingProfit_019fa3dd-2603-7c46-8875-65b7a491d595" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_FinancingItems_019fa3dd-2603-7187-95d1-1a96310db902" xlink:href="wpp-20260630.xsd#wpp_FinancingItems"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_019fa3dd-2603-7878-b75b-62d56ece2e80" xlink:to="loc_wpp_FinancingItems_019fa3dd-2603-7187-95d1-1a96310db902" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/CostsofservicesandgeneralandadministrativecostsSummaryofOperatingCostsDetails" xlink:type="simple" xlink:href="wpp-20260630.xsd#CostsofservicesandgeneralandadministrativecostsSummaryofOperatingCostsDetails"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/CostsofservicesandgeneralandadministrativecostsSummaryofOperatingCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_wpp_CostsOfServicesAndGeneralAndAdministrativeCosts_019d20ca-5791-7b8d-ac1c-82b6ca078cab" xlink:href="wpp-20260630.xsd#wpp_CostsOfServicesAndGeneralAndAdministrativeCosts"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EmployeeBenefitsExpense_019d20ca-5791-76a6-a386-d5bea0fa8666" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EmployeeBenefitsExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_CostsOfServicesAndGeneralAndAdministrativeCosts_019d20ca-5791-7b8d-ac1c-82b6ca078cab" xlink:to="loc_ifrs-full_EmployeeBenefitsExpense_019d20ca-5791-76a6-a386-d5bea0fa8666" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_MediaPassThroughCosts_019d20ca-5791-7bb6-a74e-87078f2fb96f" xlink:href="wpp-20260630.xsd#wpp_MediaPassThroughCosts"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_CostsOfServicesAndGeneralAndAdministrativeCosts_019d20ca-5791-7b8d-ac1c-82b6ca078cab" xlink:to="loc_wpp_MediaPassThroughCosts_019d20ca-5791-7bb6-a74e-87078f2fb96f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_OtherCostsOfServicesAndGeneralAdministrativeCosts_019d20ca-5791-7d6f-be6f-0f61ae70e062" xlink:href="wpp-20260630.xsd#wpp_OtherCostsOfServicesAndGeneralAdministrativeCosts"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_CostsOfServicesAndGeneralAndAdministrativeCosts_019d20ca-5791-7b8d-ac1c-82b6ca078cab" xlink:to="loc_wpp_OtherCostsOfServicesAndGeneralAdministrativeCosts_019d20ca-5791-7d6f-be6f-0f61ae70e062" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_EstablishmentCosts_019d20ca-5791-7a08-858e-f9d57b5b220f" xlink:href="wpp-20260630.xsd#wpp_EstablishmentCosts"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_CostsOfServicesAndGeneralAndAdministrativeCosts_019d20ca-5791-7b8d-ac1c-82b6ca078cab" xlink:to="loc_wpp_EstablishmentCosts_019d20ca-5791-7a08-858e-f9d57b5b220f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/EarningspershareEPSReconciliationBetweenSharesUsedinCalculatingBasicandDilutedEPSDetails" xlink:type="simple" xlink:href="wpp-20260630.xsd#EarningspershareEPSReconciliationBetweenSharesUsedinCalculatingBasicandDilutedEPSDetails"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/EarningspershareEPSReconciliationBetweenSharesUsedinCalculatingBasicandDilutedEPSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustedWeightedAverageShares_019d20ca-5791-7f1b-8c5a-db4a6b167596" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustedWeightedAverageShares"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageShares_019d20ca-5791-7384-931b-ae798b4b8076" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageShares"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_AdjustedWeightedAverageShares_019d20ca-5791-7f1b-8c5a-db4a6b167596" xlink:to="loc_ifrs-full_WeightedAverageShares_019d20ca-5791-7384-931b-ae798b4b8076" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_InstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShare_019d20ca-5791-7c95-b225-c6d7216d2899" xlink:href="wpp-20260630.xsd#wpp_InstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShare"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_AdjustedWeightedAverageShares_019d20ca-5791-7f1b-8c5a-db4a6b167596" xlink:to="loc_wpp_InstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShare_019d20ca-5791-7c95-b225-c6d7216d2899" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/AnalysisofcashflowsDetails" xlink:type="simple" xlink:href="wpp-20260630.xsd#AnalysisofcashflowsDetails"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/AnalysisofcashflowsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations_019d20ca-5791-7d49-8fd0-84ca704125f4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-70e3-823c-484f9bf689c4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_019d20ca-5791-7d49-8fd0-84ca704125f4" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-70e3-823c-484f9bf689c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInWorkingCapital_019d20ca-5791-738b-981d-0f56ced205d9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInWorkingCapital"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_019d20ca-5791-7d49-8fd0-84ca704125f4" xlink:to="loc_ifrs-full_IncreaseDecreaseInWorkingCapital_019d20ca-5791-738b-981d-0f56ced205d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ChangesInOtherProvisions_019d20ca-5791-7572-84ca-233b453f001b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ChangesInOtherProvisions"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_019d20ca-5791-7d49-8fd0-84ca704125f4" xlink:to="loc_ifrs-full_ChangesInOtherProvisions_019d20ca-5791-7572-84ca-233b453f001b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForSharebasedPayments_019d20ca-5791-7b94-81d4-b1e7b4dc680b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForSharebasedPayments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_ifrs-full_AdjustmentsForSharebasedPayments_019d20ca-5791-7b94-81d4-b1e7b4dc680b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill_019d20ca-5791-7ec8-b9f8-70156b198771" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_ifrs-full_AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill_019d20ca-5791-7ec8-b9f8-70156b198771" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDepreciationExpense_019d20ca-5791-7319-92e0-ad63d20a7c63" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDepreciationExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_ifrs-full_AdjustmentsForDepreciationExpense_019d20ca-5791-7319-92e0-ad63d20a7c63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustmentsForRightOfUseDepreciation_019d20ca-5791-7297-88f0-063c7b6730cb" xlink:href="wpp-20260630.xsd#wpp_AdjustmentsForRightOfUseDepreciation"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_wpp_AdjustmentsForRightOfUseDepreciation_019d20ca-5791-7297-88f0-063c7b6730cb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustmentsForAmortisationOfOtherIntangibleAssets_019d20ca-5791-7e4c-8a85-679c6a0b9125" xlink:href="wpp-20260630.xsd#wpp_AdjustmentsForAmortisationOfOtherIntangibleAssets"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_wpp_AdjustmentsForAmortisationOfOtherIntangibleAssets_019d20ca-5791-7e4c-8a85-679c6a0b9125" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates_019d20ca-5791-71ce-9bf4-f15708505f3d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates_019d20ca-5791-71ce-9bf4-f15708505f3d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustmentsForImpairmentChargesIncludedWithinRestructuringCosts_019d20ca-5791-79d7-b46e-3c726902eebc" xlink:href="wpp-20260630.xsd#wpp_AdjustmentsForImpairmentChargesIncludedWithinRestructuringCosts"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_wpp_AdjustmentsForImpairmentChargesIncludedWithinRestructuringCosts_019d20ca-5791-79d7-b46e-3c726902eebc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustmentsForAmortisationAndImpairmentOfAcquiredIntangibleAssets_019d20ca-5791-73c2-9ca8-1f74ef974ffd" xlink:href="wpp-20260630.xsd#wpp_AdjustmentsForAmortisationAndImpairmentOfAcquiredIntangibleAssets"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_wpp_AdjustmentsForAmortisationAndImpairmentOfAcquiredIntangibleAssets_019d20ca-5791-73c2-9ca8-1f74ef974ffd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustmentForImpairmentOfInvestmentInAssociates_019d20ca-5791-78fb-aab4-618afc0b580d" xlink:href="wpp-20260630.xsd#wpp_AdjustmentForImpairmentOfInvestmentInAssociates"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_wpp_AdjustmentForImpairmentOfInvestmentInAssociates_019d20ca-5791-78fb-aab4-618afc0b580d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_019d20ca-5791-7b1f-9e3a-12f6fc392aca" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019d20ca-5791-7b01-be34-a6ba74c24888" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_019d20ca-5791-7b1f-9e3a-12f6fc392aca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations_019d20ca-5791-73d6-9ae9-902154d57130" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperations_019d20ca-5791-73d6-9ae9-902154d57130" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsReceivedClassifiedAsOperatingActivities_019d20ca-5791-78bf-818e-0f17d3f5807d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DividendsReceivedClassifiedAsOperatingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_ifrs-full_DividendsReceivedClassifiedAsOperatingActivities_019d20ca-5791-78bf-818e-0f17d3f5807d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities_019d20ca-5791-7ec3-afb4-cb4ad7b6928f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities_019d20ca-5791-7ec3-afb4-cb4ad7b6928f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities_019d20ca-5791-72f0-8560-c6d4d0f58c6c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestReceivedClassifiedAsOperatingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities_019d20ca-5791-72f0-8560-c6d4d0f58c6c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_ContingentConsiderationPaymentsRecognizedInOperatingActivities_019d20ca-5791-7dd9-b01f-95b50bf4cc63" xlink:href="wpp-20260630.xsd#wpp_ContingentConsiderationPaymentsRecognizedInOperatingActivities"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_wpp_ContingentConsiderationPaymentsRecognizedInOperatingActivities_019d20ca-5791-7dd9-b01f-95b50bf4cc63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustmentForInterestPaidOnLeaseLiabilities_019d20ca-5791-7381-82b0-f2bb88f2b7a6" xlink:href="wpp-20260630.xsd#wpp_AdjustmentForInterestPaidOnLeaseLiabilities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_wpp_AdjustmentForInterestPaidOnLeaseLiabilities_019d20ca-5791-7381-82b0-f2bb88f2b7a6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities_019d20ca-5791-735d-a290-0b983873ef2b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestPaidClassifiedAsOperatingActivities"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities_019d20ca-5791-735d-a290-0b983873ef2b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_AdjustmentsForInvestmentIncome_019d20ca-5791-725c-8dff-9ca3c360cbb3" xlink:href="wpp-20260630.xsd#wpp_AdjustmentsForInvestmentIncome"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_019d20ca-5791-7027-b5ca-06825d346130" xlink:to="loc_wpp_AdjustmentsForInvestmentIncome_019d20ca-5791-725c-8dff-9ca3c360cbb3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.wpp.com/role/CashandcashequivalentsandtotalborrowingsCashReconciliationDetails" xlink:type="simple" xlink:href="wpp-20260630.xsd#CashandcashequivalentsandtotalborrowingsCashReconciliationDetails"/>
  <link:calculationLink xlink:role="http://www.wpp.com/role/CashandcashequivalentsandtotalborrowingsCashReconciliationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_019d20ca-5791-76ad-a7d5-e99f9922b5c4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents_019d20ca-5791-7ad4-ad38-83766ca4ae0c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_019d20ca-5791-76ad-a7d5-e99f9922b5c4" xlink:to="loc_ifrs-full_CashAndCashEquivalents_019d20ca-5791-7ad4-ad38-83766ca4ae0c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents_019d20ca-5791-7d0a-99fb-5b126e1c4d16" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BankOverdraftsClassifiedAsCashEquivalents"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_019d20ca-5791-76ad-a7d5-e99f9922b5c4" xlink:to="loc_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents_019d20ca-5791-7d0a-99fb-5b126e1c4d16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_BorrowingsExcludingBankOverdrafts_019d20ca-5791-7cd6-9738-2d5828097a0f" xlink:href="wpp-20260630.xsd#wpp_BorrowingsExcludingBankOverdrafts"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LongtermBorrowings_019d20ca-5791-79d4-a70c-31f971313c7f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_BorrowingsExcludingBankOverdrafts_019d20ca-5791-7cd6-9738-2d5828097a0f" xlink:to="loc_ifrs-full_LongtermBorrowings_019d20ca-5791-79d4-a70c-31f971313c7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wpp_CurrentBorrowingsExcludingBankOverdrafts_019d20ca-5791-7d95-8237-1535636188c1" xlink:href="wpp-20260630.xsd#wpp_CurrentBorrowingsExcludingBankOverdrafts"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_wpp_BorrowingsExcludingBankOverdrafts_019d20ca-5791-7cd6-9738-2d5828097a0f" xlink:to="loc_wpp_CurrentBorrowingsExcludingBankOverdrafts_019d20ca-5791-7d95-8237-1535636188c1" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
