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Financial instruments - valuation - Movement in Level 3 portfolios - Assets (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Trading assets |  |
Movement in level 3 assets |  |
Financial assets | £ 48,917 | £ 45,551
Derivatives |  |
Movement in level 3 assets |  |
Financial assets | 78,406 | 78,904
Recurring fair value measurement |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 153,862 |
Financial assets at end of period | 165,969 | 153,862
Recurring fair value measurement | Level 3 |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 1,961 | 2,333
Amounts recorded in the income statement | (127) | (243)
Amount recorded in the statement of comprehensive income | 13 | 32
Level 3 transfers in | (64) | (37)
Level 3 transfers out | (263) | (227)
Purchases/Originations | 382 | 463
Settlements/Other decreases | (89) | (164)
Sales | (250) | (254)
Foreign exchange and other adjustments | (9) | (16)
Financial assets at end of period | 1,682 | 1,961
Amounts recorded in the income statement in respect of balances held at period end - unrealised |  | 29
Recurring fair value measurement | Level 3 | Derivatives |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 823 | 1,007
Amounts recorded in the income statement | (122) | (156)
Level 3 transfers in | (7) | (6)
Level 3 transfers out | (3) | (5)
Purchases/Originations | 147 | 180
Settlements/Other decreases | (44) | (70)
Sales | (178) | (137)
Foreign exchange and other adjustments |  | (2)
Financial assets at end of period | 630 | 823
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 83 | 67
Recurring fair value measurement | Level 3 | Other trading assets |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 223 | 396
Amounts recorded in the income statement | (17) | (88)
Level 3 transfers in | (1) | (15)
Level 3 transfers out | (19) | (32)
Purchases/Originations | 118 | 8
Settlements/Other decreases | (27) | (8)
Sales |  | (65)
Foreign exchange and other adjustments | (1) | (3)
Financial assets at end of period | 278 | 223
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 1 | (39)
Recurring fair value measurement | Level 3 | Other financial assets |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 915 | 930
Amounts recorded in the income statement | 12 | 1
Amount recorded in the statement of comprehensive income | 13 | 32
Level 3 transfers in | (56) | (16)
Level 3 transfers out | (241) | (190)
Purchases/Originations | 117 | 275
Settlements/Other decreases | (18) | (86)
Sales | (72) | (52)
Foreign exchange and other adjustments | (8) | (11)
Financial assets at end of period | 774 | 915
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 12 | £ 1
Recurring fair value measurement | Level 3 | Financial assets |  |
Movement in level 3 assets |  |
Amounts recorded in the income statement in respect of balances held at period end - unrealised | £ 96 |

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35N&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard -URIDate 2024-03-27 + Details
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