TAX EXPENSE (Details) - Schedule of Income Tax Charges - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	[1]	Dec. 31, 2017	[1]
Schedule of Income Tax Charges [Abstract]
Tax (expense) credit attributable to policyholders	£ (148)	£ 14		£ (82)
Shareholder tax expense	(1,239)	(1,468)		(1,544)
Tax expense	£ (1,387)	£ (1,454)		£ (1,626)

[1] Restated, see note 1.