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Finance cost - Additional information (Details) - GBP (£) £ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Finance cost |  |
Interest expense on foreign exchange swaps including coupon interest | £ 54 | £ 55
Interest expense on foreign exchange swaps including coupon interest in other comprehensive income | £ 10 | £ 12

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- Definition Amount of interest expense on foreign exchange swaps including coupon interest. + References No definition available. + Details
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- Definition Amount of interest expense on foreign exchange swaps including coupon interest in other comprehensive income. + References No definition available. + Details
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