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CONDENSED CONSOLIDATED CASH FLOW STATEMENT (UNAUDITED) (Parenthetical) - GBP (£)
£ in Millions
6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Statement of cash flows [abstract]      
Adjustments for interest income £ 14,966 £ 15,069 £ 14,652
Adjustments for interest expense 8,784 9,368 8,472
Restricted cash and cash equivalents £ 19 £ 23 £ 35