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Consolidated Statement of Changes in Equity (Parenthetical) - GBP (£)
£ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of changes in equity [abstract]      
Reserve of gains and losses on hedging instruments that hedge investments in equity instruments £ 346.5 £ 343.7 £ 308.5