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Financial instruments - valuation - Movement in Level 3 portfolios - Assets (Details) - At fair value - GBP (£) £ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Movement in level 3 assets |  |
Financial assets at beginning of period | £ 165,969 |
Financial assets at end of period | 173,504 |
Level 3 |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 1,682 | £ 1,961
Amounts recorded in the income statement | (64) | (63)
Amount recorded in the statement of comprehensive income | 11 | (13)
Level 3 transfers in | 40 | 7
Level 3 transfers out | (22) | (274)
Purchases/Originations | 218 | 130
Settlements/Other decreases | (33) | (45)
Sales | (253) | (42)
Foreign exchange and other adjustments | (4) | (5)
Financial assets at end of period | 1,583 | 1,656
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 55 | 120
Level 3 | Derivatives |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 630 | 823
Amounts recorded in the income statement | (65) | (70)
Level 3 transfers in | 40 | 7
Level 3 transfers out | (6) | (2)
Purchases/Originations | 70 | 82
Settlements/Other decreases | (2) | (38)
Sales | (31) | (40)
Foreign exchange and other adjustments | (1) |
Financial assets at end of period | 637 | 762
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 57 | 116
Level 3 | Other trading assets |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 278 | 223
Amounts recorded in the income statement | 2 | 2
Level 3 transfers out |  | (14)
Purchases/Originations | 89 | 25
Settlements/Other decreases | (31) | (7)
Sales | (97) |
Foreign exchange and other adjustments | (2) | 1
Financial assets at end of period | 243 | 230
Amounts recorded in the income statement in respect of balances held at period end - unrealised | 1 |
Level 3 | Other financial assets |  |
Movement in level 3 assets |  |
Financial assets at beginning of period | 774 | 915
Amounts recorded in the income statement | (1) | 5
Amount recorded in the statement of comprehensive income | 11 | (13)
Level 3 transfers out | (16) | (258)
Purchases/Originations | 59 | 23
Sales | (125) | (2)
Foreign exchange and other adjustments | (1) | (6)
Financial assets at end of period | 703 | 664
Amounts recorded in the income statement in respect of balances held at period end - unrealised | £ (3) | £ 4

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- Definition The fair value of financial assets. [Refer: At fair value [member]; Financial assets] + 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 + Details
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- Definition The gains (losses) excluding exchange differences, recognised in other comprehensive income, on the fair value measurement of assets. [Refer: At fair value [member]; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_ii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The gains (losses) recognised in profit or loss for assets measured at fair value that are attributable to the change in unrealised gains or losses relating to those assets held at the end of the reporting period. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_f&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The gains (losses) excluding exchange differences, recognised in profit or loss, on the fair value measurement of assets. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_i&doctype=Standard -URIDate 2024-03-27 + 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 2024-01-01 -Paragraph 93 -Subparagraph e -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_iii&doctype=Standard -URIDate 2024-03-27 + Details
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