v3.25.2
Segmental reporting - Analysis of results by business (Details) - GBP (£)
£ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Disclosure of operating segments [line items]      
Net interest income £ 7,022 £ 6,128  
Non-interest income/(expense) 7,874 7,149  
Total income 14,896 13,277  
Operating costs (8,407) (7,997)  
UK regulatory levies (96) (120)  
Litigation and conduct (87) (64)  
Operating expenses (8,590) (8,181)  
Other net income 9 16  
Profit before impairment 6,315 5,112  
Credit impairment (charges)/ releases (1,112) (897) £ (1,982)
Profit before tax 5,203 4,215  
Total assets 1,598,700   1,518,202
Total liabilities 1,522,345   1,445,721
Operating segments | Barclays UK      
Disclosure of operating segments [line items]      
Net interest income 3,677 3,146  
Non-interest income/(expense) 516 567  
Total income 4,193 3,713  
Operating costs (2,283) (2,048)  
UK regulatory levies (43) (54)  
Litigation and conduct (29) (6)  
Operating expenses (2,355) (2,108)  
Other net income 0 0  
Profit before impairment 1,838 1,605  
Credit impairment (charges)/ releases (237) (66)  
Profit before tax 1,601 1,539  
Total assets 299,700   299,800
Total liabilities 282,800   284,100
Operating segments | Barclays UK Corporate Bank      
Disclosure of operating segments [line items]      
Net interest income 701 573  
Non-interest income/(expense) 302 304  
Total income 1,003 877  
Operating costs (474) (456)  
UK regulatory levies (24) (30)  
Litigation and conduct (39) 0  
Operating expenses (537) (486)  
Other net income 0 0  
Profit before impairment 466 391  
Credit impairment (charges)/ releases (31) (23)  
Profit before tax 435 368  
Total assets 68,200   61,200
Total liabilities 101,900   94,400
Operating segments | Barclays Private Bank and Wealth Management      
Disclosure of operating segments [line items]      
Net interest income 407 362  
Non-interest income/(expense) 290 270  
Total income 697 632  
Operating costs (472) (434)  
UK regulatory levies (2) (3)  
Litigation and conduct 0 1  
Operating expenses (474) (436)  
Other net income 0 0  
Profit before impairment 223 196  
Credit impairment (charges)/ releases 11 3  
Profit before tax 234 199  
Total assets 41,800   34,100
Total liabilities 76,300   75,000
Operating segments | Barclays Investment Bank      
Disclosure of operating segments [line items]      
Net interest income 631 465  
Non-interest income/(expense) 6,549 5,882  
Total income 7,180 6,347  
Operating costs (3,993) (3,858)  
UK regulatory levies (27) (33)  
Litigation and conduct (11) (11)  
Operating expenses (4,031) (3,902)  
Other net income 0 0  
Profit before impairment 3,149 2,445  
Credit impairment (charges)/ releases (139) (34)  
Profit before tax 3,010 2,411  
Total assets 1,133,100   1,053,900
Total liabilities 1,026,600   952,100
Operating segments | Barclays US Consumer Bank      
Disclosure of operating segments [line items]      
Net interest income 1,318 1,334  
Non-interest income/(expense) 369 344  
Total income 1,687 1,678  
Operating costs (803) (796)  
UK regulatory levies 0 0  
Litigation and conduct (3) (4)  
Operating expenses (806) (800)  
Other net income 0 0  
Profit before impairment 881 878  
Credit impairment (charges)/ releases (711) (719)  
Profit before tax 170 159  
Total assets 31,400   35,400
Total liabilities 23,600   24,500
Head Office      
Disclosure of operating segments [line items]      
Net interest income 288 248  
Non-interest income/(expense) (152) (218)  
Total income 136 30  
Operating costs (382) (406)  
UK regulatory levies 0 0  
Litigation and conduct (5) (43)  
Operating expenses (387) (449)  
Other net income 9 16  
Profit before impairment (242) (403)  
Credit impairment (charges)/ releases (5) (58)  
Profit before tax (247) (461)  
Total assets 24,500   33,800
Total liabilities 11,100   £ 15,600
Of which inter-segmental income/(expense)      
Disclosure of operating segments [line items]      
Total income (3) (289)  
Of which inter-segmental income/(expense) | Barclays UK      
Disclosure of operating segments [line items]      
Total income 1 (23)  
Of which inter-segmental income/(expense) | Barclays UK Corporate Bank      
Disclosure of operating segments [line items]      
Total income 985 1,221  
Of which inter-segmental income/(expense) | Barclays Private Bank and Wealth Management      
Disclosure of operating segments [line items]      
Total income 915 1,045  
Of which inter-segmental income/(expense) | Barclays Investment Bank      
Disclosure of operating segments [line items]      
Total income (1,895) (1,951)  
Of which inter-segmental income/(expense) | Barclays US Consumer Bank      
Disclosure of operating segments [line items]      
Total income £ (3) £ (3)