Financial instruments (Details) - GBP (£) £ in Millions	Dec. 31, 2025	Dec. 31, 2024
Disclosure of classes of share capital [line items]
Common equity tier 1 capital	£ 32,930	£ 31,979

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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