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Leases - Other lease costs (Details) - GBP (£)
£ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Leases    
Expenses relating to short-term leases £ 25 £ 14
Expenses relating to leases of low-value assets 5 8
Expenses relating to variable lease payments 3 2
At 31 December £ 33 £ 24