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Net finance costs
 12 Months Ended
Dec. 31, 2022
Text block [abstract]  
Net finance costs
6. Net finance costs
 
         
All figures in £ millions
   
Notes
     
2022
    
2021
1
    
2020
1
  
         
Interest payable on financial liabilities at amortised cost and associated derivatives
            
 
(32
) 
  
 
(30
) 
  
 
(31
) 
         
Interest on lease liabilities
            
 
(25
) 
  
 
(27
) 
  
 
(41
) 
         
Net foreign exchange losses
            
 
–
 
  
 
–
 
  
 
(6
) 
         
Interest on deferred and contingent consideration
            
 
(5
) 
  
 
–
 
  
 
–
 
         
Interest on tax provisions
            
 
(7
) 
  
 
(11
) 
  
 
(7
) 
         
Derivatives not in a hedge relationship
   
 
 
 
   
 
(2
) 
  
 
–
 
  
 
(22
) 
         
Finance costs
   
 
 
 
   
 
(71
) 
  
 
(68
) 
  
 
(107
) 
         
Interest receivable on financial assets at amortised cost
            
 
18
 
  
 
5
 
  
 
9
 
         
Interest on lease receivables
            
 
5
 
  
 
6
 
  
 
9
 
         
Net finance income in respect of retirement benefits
   
 
25
 
   
 
9
 
  
 
4
 
  
 
6
 
         
Fair value remeasurement of disposal proceeds
            
 
–
 
  
 
6
 
  
 
26
 
         
Fair value movements on investments held at fair value
            
 
28
 
  
 
20
 
  
 
26
 
         
Net foreign exchange gains
            
 
1
 
  
 
1
 
  
 
–
 
         
Interest on tax provisions
            
 
35
 
  
 
–
 
  
 
–
 
         
Derivatives not in a hedge relationship
   
 
 
 
   
 
27
 
  
 
20
 
  
 
–
 
         
Finance income
   
 
 
 
   
 
           123
 
  
 
             62
 
  
 
             76
 
         
Net finance income/(costs)
   
 
 
 
   
 
52
 
  
 
(6
) 
  
 
(31
) 
1.  Comparative balances have been restated – see Note 1b. 
Net movement in the fair value of hedges is further explained in note 16. Derivatives not in a hedge relationship include fair value movements in the interest rate and cross-currency interest rate swaps.