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Financial instruments: classification - Assets (Details) - GBP (£) £ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Financial instruments |  |  |
Assets | £ 781,992 | £ 799,491 | £ 723,039
Financial Assets | 781,992 | 799,491 |
Cash and balances at central banks |  |  |
Financial instruments |  |  |
Financial Assets | 177,757 | 124,489 |
Trading assets |  |  |
Financial instruments |  |  |
Financial Assets | 59,158 | 68,990 |
Derivatives [Member] |  |  |
Financial instruments |  |  |
Net hedging derivative assets | 44 | 93 |
Financial Assets | 106,139 | 166,523 |
Settlement balances |  |  |
Financial instruments |  |  |
Financial Assets | 2,141 | 2,297 |
Loans to banks - amortised cost |  |  |
Financial instruments |  |  |
Items in course of collection from other banks | 67 | 148 |
Financial Assets | 7,682 | 6,955 |
Loans to customers - amortised cost |  |  |
Financial instruments |  |  |
Financial Assets | 358,990 | 360,544 |
Other financial assets |  |  |
Financial instruments |  |  |
Financial Assets | 46,145 | 55,148 |
Intangible assets other than goodwill |  |  |
Financial instruments |  |  |
Financial Assets | 6,723 | 6,655 |
Assets, other [Member] |  |  |
Financial instruments |  |  |
Financial Assets | 8,242 | 7,890 |
Assets of Disposal Groups [Member] |  |  |
Financial instruments |  |  |
Financial Assets | 9,015 |  |
Other assets |  |  |
Financial instruments |  |  |
Assets | 23,980 | 14,545 |
Other assets | Intangible assets other than goodwill |  |  |
Financial instruments |  |  |
Assets | 6,723 | 6,655 |
Other assets | Assets, other [Member] |  |  |
Financial instruments |  |  |
Assets | 8,242 | 7,890 |
Other assets | Assets of Disposal Groups [Member] |  |  |
Financial instruments |  |  |
Financial Assets | 9,015 |  |
MVFTPL |  |  |
Financial instruments |  |  |
Financial Assets | 165,614 | 235,953 |
MVFTPL | Trading assets |  |  |
Financial instruments |  |  |
Financial Assets | 59,158 | 68,990 |
MVFTPL | Derivatives [Member] |  |  |
Financial instruments |  |  |
Financial Assets | 106,139 | 166,523 |
MVFTPL | Other financial assets |  |  |
Financial instruments |  |  |
Financial Assets | 317 | 440 |
FVOCI |  |  |
Financial instruments |  |  |
Financial Assets | 37,266 | 44,902 |
FVOCI | Other financial assets |  |  |
Financial instruments |  |  |
Financial Assets | 37,266 | 44,902 |
Amortised cost |  |  |
Financial instruments |  |  |
Financial Assets | 555,132 | 504,091 |
Amortised cost | Cash and balances at central banks |  |  |
Financial instruments |  |  |
Financial Assets | 177,757 | 124,489 |
Amortised cost | Settlement balances |  |  |
Financial instruments |  |  |
Financial Assets | 2,141 | 2,297 |
Amortised cost | Loans to banks - amortised cost |  |  |
Financial instruments |  |  |
Financial Assets | 7,682 | 6,955 |
Amortised cost | Loans to customers - amortised cost |  |  |
Financial instruments |  |  |
Financial Assets | 358,990 | 360,544 |
Amortised cost | Other financial assets |  |  |
Financial instruments |  |  |
Financial Assets | £ 8,562 | £ 9,806 |

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