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Accruals and other liabilities (Details) - GBP (£)
£ in Millions
Dec. 31, 2017
Dec. 31, 2016
Accruals and other liabilities    
Notes in circulation £ 2,186 £ 2,028
Current tax 227 336
Accruals 1,074 1,311
Deferred income 469 483
Other liabilities 2,436 2,833
Accruals and other liabilities £ 6,392 £ 6,991