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Subordinated liabilities (Details) - GBP (£)
£ in Millions
Dec. 31, 2021
Dec. 31, 2020
Subordinated liabilities    
Dated loan capital £ 8,051 £ 8,530
Undated loan capital 259 1,287
Preference shares 119 145
Total subordinated liabilities £ 8,429 £ 9,962