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Analysis of cash flows - Summary of Analysis of Cash Flows (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Cash flows from (used in) operating activities [abstract] |  |  |  |
Profit for the year |  | £ 629 | £ 197 | £ 775
Taxation |  | 402 | 149 | 385
Revaluation and retranslation of financial instruments |  | 50 | (7) | (76)
Finance costs |  | 417 | 389 | 359
Finance and investment income |  | (137) | (127) | (145)
(Earnings)/losses from associates |  | (36) | (70) | 60
Operating profit |  | 1,325 | 531 | 1,358
Non-cash share-based incentive plans (including share options) |  | 109 | 140 | 122
Depreciation of property, plant and equipment |  | 156 | 165 | 167
Depreciation of right-of-use assets |  | 213 | 257 | 262
Impairment charges included within restructuring costs |  | 3 | 185 | 43
Goodwill impairment |  | 237 | 63 | 38
Amortisation and impairment of acquired intangible assets |  | 93 | 728 | 62
Amortisation of other intangible assets |  | 32 | 25 | 22
Other impairment charges |  | 26 | 18 | 77
(Gains)/losses on disposal of investments and subsidiaries |  | (322) | (7) | 36
Gains on remeasurement of equity interests arising from a change in scope of ownership |  | 0 | 0 | (66)
Other transaction costs |  | 10 | 0 | 0
Gains of sale of property, plant and equipment |  | (7) | 0 | (6)
Operating cash flow before movement in working capital and provisions |  | 1,875 | 2,105 | 2,115
Decrease/(increase) in trade receivables and accrued income |  | 309 | 232 | (499)
Increase/(decrease) in trade payables and deferred income |  | 31 | (238) | 171
Decrease/(increase) in other receivables |  | 16 | 125 | (154)
Decrease in other payables |  | (240) | (445) | (327)
Increase/(decrease) in provisions |  | 69 | 66 | (38)
Cash generated by operations |  | 2,060 | 1,845 | 1,268
Corporation and overseas tax paid |  | (392) | (395) | (391)
Interest paid on lease liabilities |  | (95) | (103) | (92)
Other interest and similar charges paid |  | (306) | (275) | (210)
Interest received |  | 109 | 116 | 88
Investment income |  | 11 | 13 | 25
Dividends from associates |  | 31 | 43 | 38
Contingent consideration payments recognised in operating activities |  | (10) | (6) | (25)
Net cash inflow from operating activities | [1] | 1,408 | 1,238 | 701
Acquisitions and disposals: |  |  |  |
Initial cash consideration |  | (47) | (227) | (218)
Cash and cash equivalents acquired |  | 14 | 23 | 39
Contingent consideration payments recognised in investing activities |  | (87) | (53) | (47)
Purchase of other investments (including associates) |  | (33) | (10) | (10)
Acquisitions | [1] | (153) | (267) | (236)
Proceeds on disposal of investments and subsidiaries |  | 646 | 100 | 50
Cash and cash equivalents disposed |  | (93) | (1) | (12)
Disposals of investments and subsidiaries | [2] | 553 | 99 | 38
Cash consideration received from non-controlling interests |  | 0 | 46 | 0
Cash consideration for purchase of non-controlling interests |  | (87) | (16) | (84)
Cash consideration for purchase of non-controlling interests |  | (87) | 30 | (84)
Net acquisition payments and disposal proceeds |  | 313 | (138) | (282)
Share repurchases and buybacks: |  |  |  |
Purchase of own shares by ESOP Trusts |  | (82) | (54) | (55)
Shares purchased into treasury for cancellation |  | 0 | 0 | (807)
Share repurchases and buy-backs |  | £ (82) | £ (54) | £ (862)
[1] | Contingent consideration liability payments in excess of the amount determined at acquisition are recorded as operating activities.
[2] | Disposals of investments and subsidiaries represents consideration received less cash and cash equivalents disposed.

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- Definition Adjustments for finance costs to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Finance costs; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 20 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Adjustments for gain (loss) on disposals investments in subsidiaries, joint ventures and associates to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Total for all associates [member]; Total for all joint ventures [member]; Total for all subsidiaries [member]; Investments in subsidiaries, joint ventures and associates reported in separate financial statements; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 20 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Adjustments for impairment loss on goodwill recognised in profit or loss to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Goodwill; Impairment loss; Impairment loss recognised in profit or loss] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 20 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The cash flows from (used in) operating activities, which are the principal revenue-producing activities of the entity and other activities that are not investing or financing activities, from continuing and discontinued operations. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 10 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_10&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 50 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_50_d&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The aggregate cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities. [Refer: Total for all subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 39 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_39&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The cash outflow for the purchase of interests in investments accounted for using the equity method. [Refer: Investments accounted for using equity method] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 16 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_16&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The cash flows from acquisitions classified as investing activities + References No definition available. + Details
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- Definition Adjustment For Investment Income + References No definition available. + Details
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- Definition Adjustment revaluation and retranslation of financial instruments. + References No definition available. + Details
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- Definition Amortisation and impairment of acquired intangible assets. + References No definition available. + Details
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- Definition Adjustments for decrease (increase) in other receivables. + References No definition available. + Details
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- Definition Adjustments for increase in trade receivables and accrued income. + References No definition available. + Details
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- Definition Adjustments for gains (losses) on remeasurement of equity interests arising from a change in scope of ownership. + References No definition available. + Details
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- Definition Adjustments for impairment loss recognized in restructuring costs. + References No definition available. + Details
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- Definition Adjustments For Increase (Decrease) In Other Payables + References No definition available. + Details
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- Definition Adjustments for increase decrease in trade payables and deferred income. + References No definition available. + Details
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- Definition Adjustments For Interest Expense On Lease Liabilities + References No definition available. + Details
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- Definition Adjustments For Other Transaction Costs + References No definition available. + Details
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- Definition The amount of cash and cash equivalents in subsidiaries or other businesses over which control is obtained. + References No definition available. + Details
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- Definition The amount of cash and cash equivalents in subsidiaries or other businesses over which control is lost. + References No definition available. + Details
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- Definition Cash consideration for acquiring non-controlling interests. + References No definition available. + Details
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- Definition Cash flows from shares repurchase and buy backs. + References No definition available. + Details
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- Definition Contingent Consideration Recognised In Operating Activities + References No definition available. + Details
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- Definition The cash flows from disposals of investments and subsidiaries classified as investing activities. + References No definition available. + Details
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- Definition Net cash inflow outflow on acquisition and disposal. + References No definition available. + Details
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- Definition Other Impairment Charges + References No definition available. + Details
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- Definition Payments for Shares Repurchased Into Treasury + References No definition available. + Details
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- Definition Proceeds on disposal of investments and subsidiaries. + References No definition available. + Details
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- Definition Purchase of shares by employee benefit trust. + References No definition available. + Details
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