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Provisions for other liabilities and charges (Tables)
 12 Months Ended
Dec. 31, 2023
Text block [abstract]  
Summary of Provisions for Other Liabilities and Charges
       
All figures in £ millions       Property    
Legal
 and other
        Total  
At 1 January 2023
   
 
22
 
  
 
77
 
  
 
99
 
Exchange differences
   
 
–
 
  
 
(4
) 
  
 
(4
) 
Provisions made during the year
   
 
6
 
  
 
12
 
  
 
18
 
Provisions reversed during the year
   
 
(4
) 
  
 
(9
) 
  
 
(13
) 
Provisions used during the year
   
 
–
 
  
 
(60
) 
  
 
(60
) 
       
At 31 December 2023
   
 
24
 
  
 
16
 
  
 
40
 
Summary of Analysis of Provisions Analysis of provisions:
       
                  
    2023
  
All figures in £ millions       Property     
Legal
 and other
      Total  
Current   
 
11
 
   
 
14
 
   
 
25
 
Non-current
   
 
13
 
   
 
2
 
   
 
15
 
       
 
   
 
24
 
   
 
16
 
   
 
40
 
 
   
 
 
 
   
 
 
 
      2022  
Current      9        76        85  
Non-current
      13        1        14  
       
 
      22        77        99