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Financial instruments: valuation - Movement in Level 3 portfolios - Liabilities (Details) - GBP (£) £ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Other operating income and interest income |  |
Fair value of liabilities |  |
Gains Losses Recognised In Profit Or Loss Fair Value measurement Assets and Liabilities | £ 5 | £ 0
Income from trading activities |  |
Fair value of liabilities |  |
Gains Losses Recognised In Profit Or Loss Fair Value measurement Assets and Liabilities | (40) | (4)
At fair value |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 129,156 |
Financial liabilities at end of period | 118,533 |
At fair value | Level 3 |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 691 | 976
Amounts recorded in the income statement | (28) | (84)
Level 3 transfers in | 24 | 7
Level 3 transfers out | (3) | (5)
Purchases/Originations | 68 | 89
Settlements/other decreases | (29) | (27)
Sales | (35) | (54)
Foreign exchange and other adjustments | 2 | (5)
Financial liabilities at end of period | 686 | 897
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 123 | (84)
At fair value | Level 3 | Derivatives |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 685 | 975
Amounts recorded in the income statement | (28) | (84)
Level 3 transfers in | 1 | 6
Level 3 transfers out | (2) | (5)
Purchases/Originations | 67 | 89
Settlements/other decreases | (29) | (27)
Sales | (34) | (54)
Foreign exchange and other adjustments | (2) | (5)
Financial liabilities at end of period | 658 | 895
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 123 | (84)
At fair value | Level 3 | Other trading liabilities |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 3 | 1
Level 3 transfers in |  | 1
Level 3 transfers out | (1) |
Purchases/Originations | 1 |
Sales | (1) |
Financial liabilities at end of period | 2 | £ 2
At fair value | Level 3 | Financial liabilities (other) |  |
Fair value of liabilities |  |
Financial liabilities at beginning of period | 3 |
Level 3 transfers in | 23 |
Financial liabilities at end of period | £ 26 |

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