Reconciliation of profit before taxation to headline operating profit - Summary of Reconciliation of Operating (Loss)/Profit to Headline Operating Profit (Details) - GBP (£) £ in Millions |
6 Months Ended | |
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Jun. 30, 2026 |
Jun. 30, 2025 |
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| Reconciliation of operating profit to headline operating profit [Abstract] | ||
| Profit before taxation | £ 106 | £ 98 |
| Finance and investment income | (39) | (49) |
| Finance costs | 174 | 178 |
| Revaluation and retranslation of financial instruments | (34) | (11) |
| Profit before interest and taxation | 275 | 238 |
| Earnings from associates | (14) | (17) |
| Operating profit | 261 | 221 |
| Goodwill impairment | 0 | 116 |
| Impairment of investments in associates | 2 | 0 |
| Property-related impairment charges | 22 | 5 |
| Amortisation and impairment of acquired intangible assets | 26 | 32 |
| Restructuring costs | 83 | 40 |
| Losses/(gains) on disposal of investments and subsidiaries | 4 | (2) |
| Headline operating profit | £ 398 | £ 412 |
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The gains (losses) on disposals of investments. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Adjustment For Impairment Of Investment In Associates No definition available.
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- Definition Amortization and impairment of acquired intangible assets. No definition available.
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- Definition Headline operating profit/loss. No definition available.
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- Definition The profit (loss) before interest and taxation. No definition available.
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- Definition Reconciliation of operating profit to headline operating profit No definition available.
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- Definition Revaluation and retranslation of financial instruments. No definition available.
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