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Condensed consolidated statement of changes in equity (Parenthetical) - GBP (£)
£ in Millions, shares in Millions
1 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2024
Jun. 30, 2024
Jan. 31, 2024
May 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
UBIDAC              
Recycled to profit or loss on disposal of businesses           £ 305.0  
Other statutory reserves              
Capital redemption reserve   £ 2,918.0     £ 2,918.0 2,338.0  
Value of own shares held   £ 915.0     £ 915.0 540.0  
Foreign exchange reserve | UBIDAC              
Recycled to profit or loss on disposal of businesses           £ 305.0  
On Market Share Buyback Programme              
Number of shares repurchased and cancelled         161.9 301.4  
Consideration for shares repurchased         £ 410.8 £ 804.2  
On Market Share Buyback Programme | Retained earnings              
Number of shares repurchased and cancelled             2.3
Consideration for shares repurchased     £ 4.9        
On Market Share Buyback Programme | Settlement and cancellation of own shares              
Number of shares repurchased and cancelled 2.2            
Consideration for shares repurchased £ 6.8            
HM Treasury              
Consideration for shares repurchased         £ 1,200.0 £ 1,300.0  
Number of shares repurchased   392.4   469.2      
Purchase price per share   £ 3.162   £ 2.684      
Number of treasury stock, shares cancelled         222.4 336.2  
Value of treasury shares cancelled         £ 706.9 £ 906.9  
Own shares held   170.0     170.0 133.0  
Value of own shares held   £ 540.2     £ 540.2 £ 358.8