The increase (decrease) in other provisions. [Refer: Other provisions]

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The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

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The amount of provision for restructuring, such as the sale or termination of a line of business; closure of business locations in a country or region or relocation of activities from one country or region to another; changes in management structure; and fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. [Refer: Other provisions]

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OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]

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No definition available.

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Provisions - Narrative (Details) - GBP (£) £ in Millions	3 Months Ended	12 Months Ended
Provisions - Narrative (Details) - GBP (£) £ in Millions	Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2024
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
Restructuring provision		£ 170	£ 135
Regulatory and legal provisions £m
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
Change in the year		968
Provisions		2,276	1,600
Motor Commission Review
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
Change in the year	£ 800
Provisions		1,950
Dilapidations, rent reviews and other property related matters
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
Provisions		119	154
Indemnities and other matters relating to legacy business disposals
OTHER PROVISIONS (Details) - Schedule of Assumptions for Other Provisions [Line Items]
Provisions		£ 41	£ 35