VALUE OF IN-FORCE BUSINESS (Details) - Schedule of Value of In-Force Business - In-Force - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
VALUE OF IN-FORCE BUSINESS (Details) - Schedule of Value of In-Force Business [Line Items]
Acquired value of in-force non-participating investment contracts	£ 221	£ 247
Value of in-force insurance and participating investment contracts	5,396	5,311
Total value of in-force business	£ 5,617	£ 5,558

The amount of intangible assets that are material to the entity’s financial statements. [Refer: Intangible assets other than goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2020-01-01
-Paragraph 122
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_122_b&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_IntangibleAssetsMaterialToEntity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant