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Financial instruments: valuation - Hierarchy of liabilities (Details) - Recurring fair value measurement - GBP (£) £ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair value of liabilities |  |
Liabilities | £ 129,156 | £ 149,577
Trading deposits |  |
Fair value of liabilities |  |
Liabilities | 43,127 | 42,487
Debt securities in issue, trading |  |
Fair value of liabilities |  |
Liabilities | 706 | 797
Short positions, trading |  |
Fair value of liabilities |  |
Liabilities | 9,803 | 9,524
Interest rate |  |
Fair value of liabilities |  |
Liabilities | 38,483 | 48,535
Foreign exchange |  |
Fair value of liabilities |  |
Liabilities | 33,586 | 45,237
Other |  |
Fair value of liabilities |  |
Liabilities | 326 | 275
Other financial liabilities - Debt securities in issue |  |
Fair value of liabilities |  |
Liabilities | 1,608 | 1,327
Other deposits |  |
Fair value of liabilities |  |
Liabilities | 1,280 | 1,050
Financial liabilities, subordinated |  |
Fair value of liabilities |  |
Liabilities | 237 | 345
Level 1 |  |
Fair value of liabilities |  |
Liabilities | £ 7,936 | £ 7,464
As a % of total value liabilities | 6.00% | 5.00%
Level 1 | Short positions, trading |  |
Fair value of liabilities |  |
Liabilities | £ 7,936 | £ 7,462
Level 1 | Interest rate |  |
Fair value of liabilities |  |
Liabilities |  | 2
Level 2 |  |
Fair value of liabilities |  |
Liabilities | £ 120,529 | £ 141,137
As a % of total value liabilities | 93.00% | 94.00%
Level 2 | Trading deposits |  |
Fair value of liabilities |  |
Liabilities | £ 43,126 | £ 42,486
Level 2 | Debt securities in issue, trading |  |
Fair value of liabilities |  |
Liabilities | 706 | 797
Level 2 | Short positions, trading |  |
Fair value of liabilities |  |
Liabilities | 1,865 | 2,062
Level 2 | Interest rate |  |
Fair value of liabilities |  |
Liabilities | 38,044 | 47,855
Level 2 | Foreign exchange |  |
Fair value of liabilities |  |
Liabilities | 33,528 | 45,139
Level 2 | Other |  |
Fair value of liabilities |  |
Liabilities | 138 | 76
Level 2 | Other financial liabilities - Debt securities in issue |  |
Fair value of liabilities |  |
Liabilities | 1,605 | 1,327
Level 2 | Other deposits |  |
Fair value of liabilities |  |
Liabilities | 1,280 | 1,050
Level 2 | Financial liabilities, subordinated |  |
Fair value of liabilities |  |
Liabilities | 237 | 345
Level 3 |  |
Fair value of liabilities |  |
Liabilities | £ 691 | £ 976
As a % of total value liabilities | 1.00% | 1.00%
Level 3 | Trading deposits |  |
Fair value of liabilities |  |
Liabilities | £ 1 | £ 1
Level 3 | Short positions, trading |  |
Fair value of liabilities |  |
Liabilities | 2 |
Level 3 | Interest rate |  |
Fair value of liabilities |  |
Liabilities | 439 | 678
Level 3 | Foreign exchange |  |
Fair value of liabilities |  |
Liabilities | 58 | 98
Level 3 | Other |  |
Fair value of liabilities |  |
Liabilities | 188 | £ 199
Level 3 | Other financial liabilities - Debt securities in issue |  |
Fair value of liabilities |  |
Liabilities | £ 3 |

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