FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME - Schedule of Financial Assets At Fair Value Through Other Comprehensive Income (Details) - GBP (£) £ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt securities:
Total debt instruments held	£ 9,926	£ 6,835
Total financial assets at fair value through other comprehensive income	23,154	28,137
Financial assets at fair value through other comprehensive income
Debt securities:
Government securities	11,211	14,613
Corporate and other debt securities	11,514	13,134
Total debt instruments held	22,871	27,817
Treasury and other bills	0	85
Equity shares	283	235
Total financial assets at fair value through other comprehensive income	23,154	28,137
Financial assets at fair value through other comprehensive income \| Debt securities
Debt securities:
Government securities	11,211	14,613
Asset-backed securities	146	70
Corporate and other debt securities	11,514	13,134
Total debt instruments held	£ 22,871	£ 27,817

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 representing indebtedness held by the entity.

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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]

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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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