NET TRADING INCOME (Tables) - Financial assets at fair value through profit or loss, classified as held for trading, category [member]

12 Months Ended

Dec. 31, 2017

NET TRADING INCOME (Tables) [Line Items]

Disclosure of trading income (expense) [text block]

	2017 £m			2016 £m			2015 £m
Foreign exchange translation (losses) gains		(174	)		1,363			(80	)
Gains on foreign exchange trading transactions		517			542			335
Total foreign exchange		343			1,905			255
Investment property gains (losses) (note 26)		230			(83	)		416
Securities and other gains (see below)		11,244			16,723			3,043
Net trading income		11,817			18,545			3,714

Net gains (losses) [Member]

NET TRADING INCOME (Tables) [Line Items]

Disclosure of financial assets held for trading [text block]

Securities and other gains comprise net gains (losses) arising on assets and liabilities held at fair value through profit or loss and for trading as follows:

	2017 £m			2016 £m			2015 £m
Net income arising on assets held at fair value through profit or loss:
Debt securities, loans and advances		1,122			4,771			451
Equity shares		9,862			12,534			2,384
Total net income arising on assets held at fair value through profit or loss		10,984			17,305			2,835
Net (expense) income arising on liabilities held at fair value through profit or loss – debt securities in issue		(144	)		(154	)		14
Total net gains arising on assets and liabilities held at fair value through profit or loss		10,840			17,151			2,849
Net gains (losses) on financial instruments held for trading		404			(428	)		194
Securities and other gains		11,244			16,723			3,043