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Analysis of changes in financing during the year - Share capital, share premium and paid-in equity (Details) - GBP (£)
£ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Equity at beginning of period £ 36,496 £ 41,803 [1] £ 43,824
Equity at end of period 37,188 36,496 41,803 [1]
Share capital, share premium and paid-in equity      
Equity at beginning of period 15,590 16,519 18,239
Issue of paid-in equity     937
Net cash flows from financing activities     937
Ordinary shares issued     87
Share repurchased (856) (929) (698)
Paid in equity reclassified to subordinated liabilities     (2,046)
Equity at end of period £ 14,734 £ 15,590 £ 16,519
[1] In 2021, the Total equity balance of £41,803 million includes £494 million attributable to Preference shareholders.