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Share capital and other equity (Details) £ / shares in Units, shares in Thousands, £ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 GBP (£) £ / shares shares | Dec. 31, 2020 GBP (£) shares | Dec. 31, 2021 $ / shares | Dec. 31, 2019 GBP (£)
Share capital |  |  |  |
Value of shares | £ | £ 41,803 | £ 43,824 |  | £ 43,556
Ordinary shares |  |  |  |
Share capital |  |  |  |
Value of shares | £ | £ 11,468 | £ 12,129 |  | £ 12,094
Number of shares | 11,467,982 | 12,129,165 |  |
Par value per share | £ / shares | £ 1 |  |  |
Non-cumulative preference shares of US$0.01 |  |  |  |
Share capital |  |  |  |
Shares redeemed | 0 | 0 |  |
Non-cumulative preference shares of 0.01 |  |  |  |
Share capital |  |  |  |
Number of shares | 10 | 10 |  |
Par value per share | $ / shares |  |  | $ 0.01 |
Cumulative preference shares of 1 |  |  |  |
Share capital |  |  |  |
Value of shares | £ | £ 1 | £ 1 |  |
Number of shares | 483 | 900 |  |
Par value per share | £ / shares | £ 1 |  |  |

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