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Share capital (Details) £ / shares in Units, £ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 GBP (£) Vote £ / shares shares | Dec. 31, 2021 GBP (£) shares
Share capital |  |
Nominal value per share | £ / shares | £ 0.01 |
Number of votes per share | Vote | 1 |
Number of shares issued in relation to business acquisitions | 656,206,920 |
Number of shares issued in relation to employee share schemes | 4,500,000 |
Share capital | £ | £ 25 | £ 19
Number of shares issued | 2,520,039,885 | 1,859,332,965

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