v3.25.4

Earnings per share - Schedule of Earnings Per Share (Details) - GBP (£) £ / shares in Units, £ in Millions, shares in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of earnings per share [Abstract] |  |  |  |  |
Profit attributable to ordinary shareholders – basic and diluted | £ 4,196 | £ 3,923 | [1] | £ 4,933 | [1]
Weighted-average number of ordinary shares in issue – basic (in shares) | 59,790 | 62,413 |  | 64,953 |
Adjustment for share options and awards (in shares) | 723 | 661 |  | 807 |
Weighted-average number of ordinary shares in issue – diluted (in shares) | 60,513 | 63,074 |  | 65,760 |
Basic earnings per share (in GBP per share) | £ 0.070 | £ 0.063 | [1] | £ 0.076 | [1]
Diluted earnings per share (in GBP per share) | £ 0.069 | £ 0.062 | [1] | £ 0.075 | [1]
[1] | 1 Comparative periods have been represented for presentational changes. See note 1.

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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2025-01-01 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2025-01-01 -Paragraph 67 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_67&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2025-01-01 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2025-01-01 -Paragraph 67 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_67&doctype=Standard -URIDate 2025-03-27 + Details
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