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Business combinations - Goodwill and Fair value of Net Assets Acquired (Details) - GBP (£)
£ in Millions
Dec. 31, 2024
Dec. 31, 2023
Purchase consideration    
Cash paid £ 115 £ 203
Deferred and contingent consideration 67 58
Total purchase consideration 182 261
Fair value of net assets acquired (51) (88)
Goodwill from current-year acquisitions 131 173
Goodwill expected to be deductible for tax purposes £ 84 £ 76