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Financial instruments - valuation - Movement in Level 3 portfolios - Liabilities (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Level 3 | Other operating income and interest income | Other financial instruments |  |
Fair value of liabilities |  |
Gains Losses Recognised In Profit Or Loss Fair Value measurement Assets and Liabilities | £ 12 | £ 1
Level 3 | Income from trading activities | Trading assets and liabilities |  |
Fair value of liabilities |  |
Gains Losses Recognised In Profit Or Loss Fair Value measurement Assets and Liabilities | (18) | 69
Recurring fair value measurement |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 129,156 |
Financial liabilities at end of period | 130,578 | 129,156
Recurring fair value measurement | Level 3 |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 691 | 976
Amounts recorded in the income statement | 121 | 313
Level 3 transfers in | 28 | 9
Level 3 transfers out | (5) | (11)
Purchases/Originations | 122 | 200
Settlements/other decreases | (32) | (51)
Sales | (184) | (116)
Foreign exchange and other adjustments | (5) | (3)
Financial liabilities at end of period | 494 | 691
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 56 | (121)
Recurring fair value measurement | Level 3 | Derivatives |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 685 | 975
Amounts recorded in the income statement | 121 | 313
Level 3 transfers in | 1 | 7
Level 3 transfers out | (2) | (9)
Purchases/Originations | 121 | 195
Settlements/other decreases | (32) | (51)
Sales | (182) | (116)
Foreign exchange and other adjustments | (5) | (3)
Financial liabilities at end of period | 465 | 685
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 56 | (121)
Recurring fair value measurement | Level 3 | Other trading liabilities |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 3 | 1
Level 3 transfers in | 2 | 2
Level 3 transfers out | (3) | (2)
Purchases/Originations | 1 | 2
Sales | (2) |
Financial liabilities at end of period | 1 | 3
Recurring fair value measurement | Level 3 | Financial liabilities (other) |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 3 |
Level 3 transfers in | 25 |
Purchases/Originations |  | 3
Financial liabilities at end of period | £ 28 | £ 3

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