0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated income statement link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated income statement link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated income statement (Alternative calculation) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated statement of comprehensive income link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated statement of comprehensive income link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated statement of comprehensive income link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated statement of changes in equity link:presentationLink link:calculationLink link:definitionLink 9952156 - 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Disclosure - Earnings per share (EPS) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Dividends (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Assets held for sale and discontinued operations (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Goodwill (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Other intangible assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Property, plant and equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Other non-current assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Financial and other investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Investments in joint ventures and associates (Tables) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Derivative financial instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Inventories (Tables) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Trade and other receivables (Tables) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Cash and cash equivalents (Tables) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Borrowings (Tables) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Trade and other payables (Tables) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Contract liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Other non-current liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Pensions and other post-retirement benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Provisions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Share capital (Tables) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Other equity reserves (Tables) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Net debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Commitments and contingencies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Related party transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Financial risk management (Tables) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Borrowing facilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Subsidiary undertakings, joint ventures and associates (Tables) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Sensitivities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Basis of preparation and recent accounting developments (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Segmental analysis - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Segmental analysis - Schedule of revenue by operating segments (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Segmental analysis - Schedule of operating profit by operating segments (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Segmental analysis - Schedule of reconciliation of total operating profit to profit before tax from continuing operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Segmental analysis - Schedule of depreciation, amortisation and impairment by operating segments (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Segmental analysis - Schedule of capital investment by operating segments (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Segmental analysis - Schedule of geographical analysis of non-current assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Revenue - Disclosure of disaggregation of revenue by primary geographical market and major service lines (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Revenue - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Other operating costs - Schedule of analysis of expenses by nature (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Other operating costs - Schedule of payroll costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Other operating costs - Schedule of payroll costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Other operating costs - Summary of number of employees (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Other operating costs - Schedule of key management personnel (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Other operating costs - Schedule of auditors' remuneration (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Exceptional items and remeasurements - Schedule of exceptional items and remeasurements from continuing operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Exceptional items and remeasurements - Schedule of remeasurement, tax exceptional items (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Exceptional items and remeasurements - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Finance income and costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Tax - Schedule of components of tax expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Tax - Disclosure of tax charged/(credited) to the consolidated statement of comprehensive income and equity (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Tax - Disclosure of tax charged/(credited) to the consolidated statement of comprehensive income and equity (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Tax - Schedule of effective tax rate reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Tax - Schedule of tax included within the statement of financial position (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Tax - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Tax - Schedule of deferred tax assets not recognised (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Earnings per share (EPS) (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Dividends - Schedule of dividends to shareholders (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Dividends - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Assets held for sale and discontinued operations - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Assets held for sale and discontinued operations - Schedule of assets and liabilities classified as held for sale, NGR & Grain LNG (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Assets held for sale and discontinued operations - Summary of Income Statement for discontinued operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Assets held for sale and discontinued operations - Summary of Statement of Comprehensive Income for discontinued operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Goodwill - Schedule of changes in intangible assets and goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - Goodwill - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - Goodwill - Schedule of allocation of goodwill by operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - Other intangible assets - Schedule of analysis of other intangible assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - Other intangible assets - Schedule of asset useful economic lives (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - Property, plant and equipment - Disclosure of analysis of property, plant and equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - Property, plant and equipment - Disclosure of useful economic lives of property, plant and equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955585 - Disclosure - Property, plant and equipment - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955586 - Disclosure - Property, plant and equipment - Disclosure of sensitivity of gas assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955587 - Disclosure - Property, plant and equipment - Disclosure of movements of right-of-use assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955588 - Disclosure - Property, plant and equipment - Disclosure of information in relation to right-of-use assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955589 - Disclosure - Other non-current assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955590 - Disclosure - Financial and other investments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955591 - Disclosure - Financial and other investments - Schedule of financial assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955592 - Disclosure - Investments in joint ventures and associates - Disclosure of share of net assets, joint ventures and associates (Details) link:presentationLink link:calculationLink link:definitionLink 9955593 - Disclosure - Investments in joint ventures and associates - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955594 - Disclosure - Investments in joint ventures and associates - Disclosure of material interest in joint ventures and associates (Details) link:presentationLink link:calculationLink link:definitionLink 9955595 - Disclosure - Investments in joint ventures and associates - Disclosure of detailed information about joint ventures and associates (Details) link:presentationLink link:calculationLink link:definitionLink 9955596 - Disclosure - Investments in joint ventures and associates - Disclosure of aggregate information of associates and joint venture (Details) link:presentationLink link:calculationLink link:definitionLink 9955597 - Disclosure - Derivative financial instruments - Schedule of fair values of derivatives by category (Details) link:presentationLink link:calculationLink link:definitionLink 9955598 - Disclosure - Derivative financial instruments - Schedule of fair values of financing derivatives by type (Details) link:presentationLink link:calculationLink link:definitionLink 9955599 - Disclosure - Derivative financial instruments - Schedule of maturity profile of financing derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 9955600 - Disclosure - Derivative financial instruments - Schedule of notional contract amounts of financing derivatives by type (Details) link:presentationLink link:calculationLink link:definitionLink 9955601 - Disclosure - Derivative financial instruments - Schedule of fair values of commodity contract derivatives by type (Details) link:presentationLink link:calculationLink link:definitionLink 9955602 - Disclosure - Derivative financial instruments - Schedule of maturity profile of commodity contract derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 9955603 - Disclosure - Derivative financial instruments - Schedule of notional quantities of commodity contract derivatives by type (Details) link:presentationLink link:calculationLink link:definitionLink 9955604 - Disclosure - Inventories - Schedule of inventories and current intangible assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955605 - Disclosure - Inventories - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955606 - Disclosure - Trade and other receivables - Schedule of trade and other receivables (Details) link:presentationLink link:calculationLink link:definitionLink 9955607 - Disclosure - Trade and other receivables - Schedule of reconciliation of changes in allowance account for credit losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955608 - Disclosure - Trade and other receivables - Schedule of receivables by geographical area (Details) link:presentationLink link:calculationLink link:definitionLink 9955609 - Disclosure - Trade and other receivables - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955610 - Disclosure - Trade and other receivables - Schedule of average expected loss rates and balances (Details) link:presentationLink link:calculationLink link:definitionLink 9955611 - Disclosure - Cash and cash equivalents - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955612 - Disclosure - Cash and cash equivalents - Schedule of cash and cash equivalents (Details) link:presentationLink link:calculationLink link:definitionLink 9955613 - Disclosure - Borrowings - Schedule of current and non-current borrowings (Details) link:presentationLink link:calculationLink link:definitionLink 9955614 - Disclosure - Borrowings - Schedule of borrowings repayment schedule (Details) link:presentationLink link:calculationLink link:definitionLink 9955615 - Disclosure - Borrowings - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955616 - Disclosure - Borrowings - Schedule of lease obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955617 - Disclosure - Trade and other payables (Details) link:presentationLink link:calculationLink link:definitionLink 9955618 - Disclosure - Contract liabilities - Summary of contract liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955619 - Disclosure - Contract liabilities - Schedule of significant changes in contract assets and contract liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955620 - Disclosure - Other non-current liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955621 - Disclosure - Pensions and other post-retirement benefits - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955622 - Disclosure - Pensions and other post-retirement benefits - Disclosure of actuarial assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955623 - Disclosure - Pensions and other post-retirement benefits - Disclosure of amounts recognised in the statement of financial position (Details) link:presentationLink link:calculationLink link:definitionLink 9955623 - Disclosure - Pensions and other post-retirement benefits - Disclosure of amounts recognised in the statement of financial position (Details) link:presentationLink link:calculationLink link:definitionLink 9955624 - Disclosure - Pensions and other post-retirement benefits - Disclosure of amounts recognised in the income statement and statement of other comprehensive income (Details) link:presentationLink link:calculationLink link:definitionLink 9955625 - Disclosure - Pensions and other post-retirement benefits - Schedule of reconciliation of the net defined benefit asset (liability) (Details) link:presentationLink link:calculationLink link:definitionLink 9955626 - Disclosure - Pensions and other post-retirement benefits - Schedule of reconciliation of changes in the present value of defined benefit obligations (including unfunded obligations) (Details) link:presentationLink link:calculationLink link:definitionLink 9955627 - Disclosure - Pensions and other post-retirement benefits - Schedule of reconciliation of changes in fair value of plan assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955628 - Disclosure - Pensions and other post-retirement benefits - Disclosure of asset allocations (Details) link:presentationLink link:calculationLink link:definitionLink 9955629 - Disclosure - Pensions and other post-retirement benefits - Disclosure of asset allocation strategy (Details) link:presentationLink link:calculationLink link:definitionLink 9955630 - Disclosure - Provisions - Schedule of changes in provisions (Details) link:presentationLink link:calculationLink link:definitionLink 9955631 - Disclosure - Provisions - Schedule of current and non-current provisions (Details) link:presentationLink link:calculationLink link:definitionLink 9955632 - Disclosure - Provisions - Schedule of environmental provision (Details) link:presentationLink link:calculationLink link:definitionLink 9955633 - Disclosure - Provisions - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955634 - Disclosure - Share capital - Schedule of share capital (Details) link:presentationLink link:calculationLink link:definitionLink 9955635 - Disclosure - Share capital - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955636 - Disclosure - Other equity reserves (Details) link:presentationLink link:calculationLink link:definitionLink 9955637 - Disclosure - Net debt - Schedule of components of net debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955638 - Disclosure - Net debt - Schedule of changes in net debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955639 - Disclosure - Commitments and contingencies - Schedule of capital commitments and contingent liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955640 - Disclosure - Commitments and contingencies - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955641 - Disclosure - Related party transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955642 - Disclosure - Financial risk management - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955643 - Disclosure - Financial risk management - Disclosure of treasury credit risk (Details) link:presentationLink link:calculationLink link:definitionLink 9955644 - Disclosure - Financial risk management - Credit risk, narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955645 - Disclosure - Financial risk management - Disclosure of offsetting of financial assets and financial liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955645 - Disclosure - Financial risk management - Disclosure of offsetting of financial assets and financial liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955646 - Disclosure - Financial risk management - Disclosure of maturity analysis for financial liabilities and derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 9955647 - Disclosure - Financial risk management - Disclosure of nature and extent of risks arising from financial instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955648 - Disclosure - Financial risk management - Disclosure of financial instruments by type of interest rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955649 - Disclosure - Financial risk management - Disclosure of detailed information about hedging instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955650 - Disclosure - Financial risk management - Disclosure of effects of hedge accounting on financial position and year-to-date performance for each type of hedge (Details) link:presentationLink link:calculationLink link:definitionLink 9955651 - Disclosure - Financial risk management - Schedule of fair value analysis (Details) link:presentationLink link:calculationLink link:definitionLink 9955652 - Disclosure - Financial risk management - Fair value analysis, narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955653 - Disclosure - Financial risk management - Schedule of changes in level 3 financial instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955654 - Disclosure - Financial risk management - Schedule of impacts of reasonably possible changes in significant level 3 assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955655 - Disclosure - Financial risk management - Capital risk management (Details) link:presentationLink link:calculationLink link:definitionLink 9955656 - Disclosure - Borrowing facilities - Schedule of undrawn committed borrowing facilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955657 - Disclosure - Borrowing facilities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955658 - Disclosure - Subsidiary undertakings, joint ventures and associates - Disclosure of interests in subsidiaries (Details) link:presentationLink link:calculationLink link:definitionLink 9955659 - Disclosure - Subsidiary undertakings, joint ventures and associates - Disclosure of interests in joint ventures (Details) link:presentationLink link:calculationLink link:definitionLink 9955660 - Disclosure - Subsidiary undertakings, joint ventures and associates - Disclosure of interests in joint operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955661 - Disclosure - Subsidiary undertakings, joint ventures and associates - Disclosure of interests in associates (Details) link:presentationLink link:calculationLink link:definitionLink 9955662 - Disclosure - Sensitivities - Schedule of sensitivities on areas of estimation uncertainty (Details) link:presentationLink link:calculationLink link:definitionLink 9955663 - Disclosure - Sensitivities - Schedule of sensitivities on financial instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955664 - Disclosure - Post balance sheet events (Details) link:presentationLink link:calculationLink link:definitionLink