FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Details) - Schedule of Financial Assets At Fair Value Through Other Comprehensive Income - GBP (£) £ in Millions	Dec. 31, 2020	Dec. 31, 2019
Debt securities:
Government securities	£ 14,286	£ 13,098
Asset-backed securities:
Mortgage-backed securities	0	121
Other asset-backed securities	180	60
Corporate and other debt securities	12,935	11,051
Asset-backed securities	27,401	24,330
Treasury and other bills	36	535
Equity shares	166	227
Total financial assets at fair value through other comprehensive income	£ 27,603	£ 25,092

The amount of debt instruments held that are backed by underlying assets. [Refer: Debt instruments held]

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The amount of debt instruments held by the entity that were issued by a bank. [Refer: Debt instruments held]

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The amount of debt instruments held by the entity that were issued by a corporate entity. [Refer: Debt instruments held]

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The amount of instruments held by the entity that provide evidence of a residual interest in the assets of another entity after deducting all of its liabilities.

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The amount of financial assets at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets; Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of debt instruments held by the entity that were issued by a government. [Refer: Debt instruments held; Government [member]]

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The amount of debt instruments held by the entity that it does not separately disclose in the same statement or note. [Refer: Debt instruments held]

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An entity’s own equity instruments, held by the entity or other members of the consolidated group.

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