v3.26.1
Credit Risk - Disclosure of analysis of funds and eligible liabilities (Details) - GBP (£)
£ in Millions
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Total equity excluding non-controlling interests per the balance sheet £ 79,358 £ 76,668 £ 77,784
Less: other equity instruments (recognised as AT1 capital) (13,275) (12,714) (12,725)
Adjustment to retained earnings for foreseeable ordinary share dividends (1,000) (500) (778)
Adjustment to retained earnings for foreseeable repurchase of shares 0 (507) (271)
Adjustment to retained earnings for foreseeable other equity coupons (38) (45) (36)
Goodwill and intangible assets (8,912)   (8,284)
Defined benefit pension fund assets (3,316)   (3,308)
Total regulatory capital 133,852 128,850 127,665
Total RWAs 364,764 364,462 356,774
T1 capital      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Total regulatory capital 65,519 63,933 63,795
CET1 capital      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Additional value adjustments (PVA) (2,086) (2,103) (1,956)
Goodwill and intangible assets (8,845) (8,327) (8,255)
Deferred tax assets that rely on future profitability excluding temporary differences (892) (958) (1,069)
Fair value reserves related to gains or losses on cash flow hedges 1,548 2,147 666
Excess of expected losses over impairment (505) (446) (436)
Gains or losses on liabilities at fair value resulting from own credit 577 507 904
Defined benefit pension fund assets (2,407) (2,352) (2,398)
Direct and indirect holdings by an institution of own CET1 instruments (6) (7) (14)
Other regulatory adjustments (186) (144) (346)
Total regulatory capital 52,243 51,219 51,070
AT1 capital      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Total equity excluding non-controlling interests per the balance sheet 13,286 12,758 12,758
Other regulatory adjustments (10) (44) (33)
Total regulatory capital 13,275 12,714 12,725
T2 capital      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Total equity excluding non-controlling interests per the balance sheet 8,479 7,937 8,835
Qualifying T2 capital (including minority interests) issued by subsidiaries 49 53 55
Other regulatory adjustments (118) (134) (71)
Total regulatory capital 73,929 71,789 72,614
Less : Ineligible T2 capital (including minority interests) issued by subsidiaries      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Total regulatory capital (49) (53) (55)
Eligible liabilities      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Total regulatory capital £ 59,973 £ 57,113 £ 55,106