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Memorandum items - Contractual obligations of future (Details) - GBP (£)
£ in Millions
Dec. 31, 2024
Dec. 31, 2023
Contractual obligations for future expenditure    
Capital expenditure on property, plant and equipment £ 14 £ 38
Contracts to purchase goods or services 1,160 1,121
Total capital commitments 1,174 1,159
Within 1 year    
Contractual obligations for future expenditure    
Contracts to purchase goods or services £ 356 £ 379