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Memorandum items - Contingent liabilities and commitments (Details) - GBP (£)
£ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Contingent liabilities and commitments      
Standby facilities, credit lines and other commitments £ 121,576 £ 121,308  
Contingent liabilities and commitments 126,581 125,367 £ 128,732
Guarantees      
Contingent liabilities and commitments      
Estimated net exposure 3,150 2,055  
Other contingent liabilities      
Contingent liabilities and commitments      
Estimated net exposure £ 1,855 £ 2,004