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Deferred income tax - Additional information (Details) - GBP (£) £ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Deferred income tax |  |  |
Deferred tax liability (asset) | £ 477 | £ 474 | £ 470
Tax losses |  |  |
Deferred income tax |  |  |
Deferred tax liability (asset) | £ (41) | (38) | £ (23)
Utilisation period for deferred tax assets | 10 years |  |
Unremitted earnings from subsidiaries |  |  |
Deferred income tax |  |  |
Deferred tax liability (asset) | £ 3 | 4 |
UK |  |  |
Deferred income tax |  |  |
Capital losses carried forward on which no deferred tax asset is recognised | 276 | 276 |
UK | Tax losses |  |  |
Deferred income tax |  |  |
Deferred tax liability (asset) | (30) | (28) |
Tax losses for which deferred tax assets not recognized |  | 34 |
Certain jurisdictions | Tax losses |  |  |
Deferred income tax |  |  |
Tax losses for which deferred tax assets not recognized | 242 | 169 |
Certain jurisdictions | Tax losses | Not later than 21 years |  |  |
Deferred income tax |  |  |
Tax losses for which deferred tax assets not recognized | £ 203 |  |
Certain jurisdictions | Tax losses | Not later than 22 years |  |  |
Deferred income tax |  |  |
Tax losses for which deferred tax assets not recognized |  | £ 95 |

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- Definition The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2024-01-01 -Paragraph 81 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_e&doctype=Standard -URIDate 2024-03-27 + Details
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