XML 424 R150.htm IDEA: XBRL DOCUMENT v3.24.1
Fair value estimation - Contingent consideration (Details) - Contingent consideration - GBP (£)
£ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair value estimation    
Balance at the beginning £ 70 £ 75
Exchange differences (3) (2)
Acquisitions 41 18
Payments (28) (24)
Revaluation of put option through equity (4) 3
Balance at the end £ 76 £ 70