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Contingent liabilities and commitments (Details) - GBP (£) £ in Millions	Jun. 30, 2025	Dec. 31, 2024
Contingent liabilities and commitments
Standby facilities, credit lines and other commitments	£ 142,157	£ 135,405
Total	146,320	139,961
Guarantees
Contingent liabilities and commitments
Estimated net exposure	2,801	3,060
Other contingent liabilities
Contingent liabilities and commitments
Estimated net exposure	£ 1,362	£ 1,496

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- Definition

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- Definition

The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]]

+ References

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The amount of contingent liabilities and the amount of future expenditures that the entity is committed to make.

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- Definition

The amount of standby facilities, credit lines and other commitments.

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