v3.25.4

Derivative financial instruments - Narrative (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items] |  |
Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, liabilities | £ 524 | £ 980
Fixed rate issuance |  |
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items] |  |
Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, liabilities | 498 | 582
Fixed rate mortgages |  |
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items] |  |
Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, liabilities | 26 | 398
Cash flow hedges |  |
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items] |  |
Hedged cash flows that will no longer occur £m | 0 | 0
Foreign currency issuance | Foreign exchange | Cash flow hedges | Foreign currency issuance |  |
DERIVATIVE FINANCIAL INSTRUMENTS (Tables) [Line Items] |  |
Hedged cash flows that will no longer occur £m | £ 0 | £ 0

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- Definition The accumulated amount of fair value hedge adjustment remaining in the statement of financial position for a hedged item that is a financial liability measured at amortised cost and has ceased to be adjusted for hedging gains and losses. [Refer: Financial liabilities at amortised cost; Hedged items [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 24B -Subparagraph a -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_a_v&doctype=Standard -URIDate 2025-03-27 + Details
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