The interest rate on borrowings. [Refer: Borrowings]

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The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]

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The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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Cash Reconciliation

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Cash and cash equivalents and total borrowings - Additional information (Detail) £ in Millions, $ in Millions	Jun. 30, 2026 GBP (£)	Mar. 31, 2026 USD ($)	Dec. 31, 2025 GBP (£)
USD bonds due March 2036
Cash Reconciliation [Line Items]
Bond amount \| $		$ 600
Borrowings, interest rate		6.50%
Corporate bond
Cash Reconciliation [Line Items]
Fair value of corporate bonds \| £	£ 4,937		£ 4,595