AVAILABLE-FOR-SALE FINANCIAL ASSETS (Tables)

12 Months Ended

Dec. 31, 2017

Financial assets available-for-sale, category [member]

AVAILABLE-FOR-SALE FINANCIAL ASSETS (Tables) [Line Items]

Disclosure of Available-For-Sale Financial Assets [text block]

	2017 £m		2016 £m
Debt securities:
Government securities		34,708		48,714
Bank and building society certificates of deposit		167		142
Asset-backed securities:
Mortgage-backed securities		1,156		108
Other asset-backed securities		255		317
Corporate and other debt securities		4,615		6,030
		40,901		55,311
Equity shares		1,197		1,213
Total available-for-sale financial assets		42,098		56,524