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Share capital and other equity (Details) - GBP (£) £ / shares in Units, shares in Thousands, £ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Date of approval |  |
Par value per share | £ 1.0769 | £ 1.0769
Ordinary shares |  |
Date of approval |  |
Allotted, called up and fully paid | £ 9,683.0 | £ 10,539.0
Number of shares | 8,991,737 | 9,786,024
Par value per share | £ 1.076923076923077 |
Cumulative preference shares of 1 |  |
Date of approval |  |
Allotted, called up and fully paid | £ 0.5 | £ 0.5
Number of shares | 483 | 483
Par value per share | £ 1 | £ 1

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