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RELATED PARTY TRANSACTIONS (Details) - Schedule of Deposits - GBP (£)
£ in Millions
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Deposits      
Deposits £ 12 £ 13 £ 16
Deposits 20 12 13
Deposits Placed [Member]      
Deposits      
Deposits 41 58  
Deposits 41 41 58
Deposits Withdrawn [Member]      
Deposits      
Deposits (42) (61)  
Deposits £ (33) £ (42) £ (61)