v3.25.4

Fair values of financial assets and liabilities - Schedule of Level 3 Derivative Assets and Liabilities (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items] |  |
At 1 January, derivative assets | £ 24,065 |
At 1 January, derivative liabilities | (21,676) |
At 31 December, derivative assets | 19,727 | £ 24,065
At 31 December, derivative liabilities | (16,132) | (21,676)
Level 3 £m |  |
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items] |  |
At 1 January, derivative assets | 741 |
At 1 January, derivative liabilities | (422) |
At 31 December, derivative assets | 464 | 741
At 31 December, derivative liabilities | (224) | (422)
Derivative assets £m | Level 3 £m |  |
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items] |  |
At 1 January, derivative assets | 741 | 422
Exchange and other adjustments | 19 | (15)
(Losses) gains recognised in the income statement within other income | (216) | 11
Purchases (additions) | 7 | 5
(Sales) redemptions | (22) | (29)
Transfers into the level 3 portfolio | 0 | 347
Transfers out of the level 3 portfolio | (65) | 0
At 31 December, derivative assets | 464 | 741
Gains recognised in the income statement within other income | 216 | (11)
Derivative assets £m | Level 3 £m | Other £m |  |
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items] |  |
(Losses) gains recognised in the income statement within other income | 43 | (12)
Gains recognised in the income statement within other income | (43) | 12
Derivative liabilities £m | Level 3 £m |  |
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items] |  |
At 1 January, derivative liabilities | (422) | (444)
Exchange and other adjustments | (9) | 7
(Losses) gains recognised in the income statement within other income | 189 | (7)
Purchases (additions) | (7) | (4)
(Sales) redemptions | 25 | 53
Transfers into Level 3 of fair value hierarchy, liabilities | 0 | (27)
Transfers out of the level 3 portfolio | 0 | 0
At 31 December, derivative liabilities | (224) | (422)
(Losses) gains recognised in the income statement, within other income, relating to the change in fair value of those assets or liabilities held at 31 December | (189) | 7
Derivative liabilities £m | Level 3 £m | Other £m |  |
FINANCIAL INSTRUMENTS (Details) - Schedule of Level 3 Derivative Assets and Liabilities [Line Items] |  |
(Losses) gains recognised in the income statement within other income | (31) | 7
(Losses) gains recognised in the income statement, within other income, relating to the change in fair value of those assets or liabilities held at 31 December | £ 31 | £ (7)

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- Definition The increase in the fair value measurement of assets resulting from purchases of those assets. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2025-01-01 -Paragraph 93 -Subparagraph e -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_iii&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The decrease in the fair value measurement of assets resulting from sales. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2025-01-01 -Paragraph 93 -Subparagraph e -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_iii&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of transfers of assets into Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2025-01-01 -Paragraph 93 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_iv&doctype=Standard -URIDate 2025-03-27 + Details
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