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Share capital (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Share capital |
Summary of share capital | ​
​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2021
​ |  | £m |  | £m
Issued and fully paid | ​ | ​ | ​ | ​
At 31 December – 2,520,039,885 shares (2021: 1,859,332,965) |  | 25 |  | 19
​

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