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Financial instruments: valuation - Hierarchy of liabilities (Details) - GBP (£) £ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Fair value of liabilities |  |  |
Liabilities | £ 167,807 | £ 236,157 |
Trading deposits |  |  |
Fair value of liabilities |  |  |
Liabilities | 38,660 | 44,069 |
Debt securities in issue, trading |  |  |
Fair value of liabilities |  |  |
Liabilities | 974 | 1,408 |
Short positions, trading |  |  |
Fair value of liabilities |  |  |
Liabilities | 24,964 | 26,779 |
Derivatives [Member] |  |  |
Fair value of liabilities |  |  |
Liabilities | 100,835 | 160,705 |
Other financial liabilities - Debt securities in issue |  |  |
Fair value of liabilities |  |  |
Liabilities | 1,103 | 1,607 |
Other deposits |  |  |
Fair value of liabilities |  |  |
Liabilities | 568 | 796 |
Financial liabilities, subordinated |  |  |
Fair value of liabilities |  |  |
Liabilities | 703 | 793 |
Level 1 |  |  |
Fair value of liabilities |  |  |
Liabilities | £ 20,507 | £ 19,045 |
As % of Total FV Assets | 12.00% | 8.00% |
Level 1 | Short positions, trading |  |  |
Fair value of liabilities |  |  |
Liabilities | £ 20,507 | £ 19,045 |
Level 2 |  |  |
Fair value of liabilities |  |  |
Liabilities | £ 146,691 | £ 216,218 |
As % of Total FV Assets | 88.00% | 92.00% |
Level 2 | Trading deposits |  |  |
Fair value of liabilities |  |  |
Liabilities | £ 38,658 | £ 44,062 |
Level 2 | Debt securities in issue, trading |  |  |
Fair value of liabilities |  |  |
Liabilities | 974 | 1,408 |
Level 2 | Short positions, trading |  |  |
Fair value of liabilities |  |  |
Liabilities | 4,456 | 7,734 |
Level 2 | Derivatives [Member] |  |  |
Fair value of liabilities |  |  |
Liabilities | 100,229 | 159,818 |
Level 2 | Other financial liabilities - Debt securities in issue |  |  |
Fair value of liabilities |  |  |
Liabilities | 1,103 | 1,607 |
Level 2 | Other deposits |  |  |
Fair value of liabilities |  |  |
Liabilities | 568 | 796 |
Level 2 | Financial liabilities, subordinated |  |  |
Fair value of liabilities |  |  |
Liabilities | 703 | 793 |
Level 3 |  |  |
Fair value of liabilities |  |  |
Liabilities | £ 609 | £ 894 |
As % of Total FV Assets | 0.00% | 0.00% |
Level 3 | Trading deposits |  |  |
Fair value of liabilities |  |  |
Liabilities | £ 2 | £ 7 |
Level 3 | Short positions, trading |  |  |
Fair value of liabilities |  |  |
Liabilities | 1 |  |
Level 3 | Derivatives [Member] |  |  |
Fair value of liabilities |  |  |
Liabilities | 606 | 887 |
Recurring | Level 3 |  |  |
Fair value of liabilities |  |  |
Liabilities | £ 609 | £ 894 | £ 1,317

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