v3.25.4
Insurance business - (D) Reconciliation of insurance balances for liability for remaining coverage and liability for incurred claims (Details) - GBP (£)
£ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January £ (127,355)    
Net liability at 31 December (135,205) £ (127,355)  
Life      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January (126,968) (119,783)  
Contracts under the fair value transition approach 1,651 1,498  
Other contracts 1,035 1,138  
Insurance revenue 2,686 2,636  
Insurance service expenses (1,950) (2,159)  
Insurance service result 736 477  
Net finance expense from insurance and participating investment contracts (15,337) (10,381)  
Exchange differences (84) 80  
Total change in profit or loss (14,685) (9,824)  
Investment components 0 0  
Premiums received (10,618) (10,679)  
Claims and other insurance service expenses paid 12,240 13,063  
Insurance acquisition cash flows 306 265  
Cash flows 1,928 2,649  
Derecognition Consideration 4,932 0  
Transfer to other items in the balance sheet 0 (10)  
Net liability at 31 December (134,793) (126,968) £ (119,783)
Losses and reversal of losses on onerous insurance contracts 84 72  
Amortisation of insurance acquisition cash flows 117 105 88
Life | Excluding loss component £m      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January (125,854) (118,724)  
Contracts under the fair value transition approach 1,651 1,498  
Other contracts 1,035 1,138  
Insurance revenue 2,686 2,636  
Insurance service expenses (120) (105)  
Insurance service result 2,566 2,531  
Net finance expense from insurance and participating investment contracts (15,313) (10,371)  
Exchange differences (84) 80  
Total change in profit or loss (12,831) (7,760)  
Investment components 10,411 10,205  
Premiums received (10,618) (10,679)  
Claims and other insurance service expenses paid 0 849  
Insurance acquisition cash flows 306 265  
Cash flows (10,312) (9,565)  
Derecognition Consideration 4,932 0  
Transfer to other items in the balance sheet 0 (10)  
Net liability at 31 December (133,654) (125,854) (118,724)
Life | Loss component £m      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January (515) (466)  
Contracts under the fair value transition approach 0 0  
Other contracts 0 0  
Insurance revenue 0 0  
Insurance service expenses (40) (44)  
Insurance service result (40) (44)  
Net finance expense from insurance and participating investment contracts (19) (5)  
Exchange differences 0 0  
Total change in profit or loss (59) (49)  
Investment components 0 0  
Premiums received 0 0  
Claims and other insurance service expenses paid 0 0  
Insurance acquisition cash flows 0 0  
Cash flows 0 0  
Derecognition Consideration 0 0  
Transfer to other items in the balance sheet 0 0  
Net liability at 31 December (574) (515) (466)
Life | Liability for incurred claims £m      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January (599) (593)  
Contracts under the fair value transition approach 0 0  
Other contracts 0 0  
Insurance revenue 0 0  
Insurance service expenses (1,790) (2,010)  
Insurance service result (1,790) (2,010)  
Net finance expense from insurance and participating investment contracts (5) (5)  
Exchange differences 0 0  
Total change in profit or loss (1,795) (2,015)  
Investment components (10,411) (10,205)  
Premiums received 0 0  
Claims and other insurance service expenses paid 12,240 12,214  
Insurance acquisition cash flows 0 0  
Cash flows 12,240 12,214  
Derecognition Consideration 0 0  
Transfer to other items in the balance sheet 0 0  
Net liability at 31 December (565) (599) (593)
Non-life      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January (387) (364)  
Contracts under the fair value transition approach 0 0  
Other contracts 752 655  
Insurance revenue 752 655  
Insurance service expenses (593) (565)  
Insurance service result 159 90  
Net finance expense from insurance and participating investment contracts (14) (7)  
Total change in profit or loss 145 83  
Premiums received (744) (659)  
Claims and other insurance service expenses paid 540 524  
Insurance acquisition cash flows 34 29  
Cash flows (170) (106)  
Net liability at 31 December (412) (387) (364)
Losses and reversal of losses on onerous insurance contracts 0  
Amortisation of insurance acquisition cash flows 31 32  
Non-life | Excluding loss component £m      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January (32) (25)  
Contracts under the fair value transition approach 0 0  
Other contracts 752 655  
Insurance revenue 752 655  
Insurance service expenses (31) (32)  
Insurance service result 721 623  
Net finance expense from insurance and participating investment contracts 0 0  
Total change in profit or loss 721 623  
Premiums received (744) (659)  
Claims and other insurance service expenses paid 0 0  
Insurance acquisition cash flows 34 29  
Cash flows (710) (630)  
Net liability at 31 December (21) (32) (25)
Non-life | Loss component £m      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January 0 0  
Contracts under the fair value transition approach 0 0  
Other contracts 0 0  
Insurance revenue 0 0  
Insurance service expenses 0 0  
Insurance service result 0 0  
Net finance expense from insurance and participating investment contracts 0 0  
Total change in profit or loss 0 0  
Premiums received 0 0  
Claims and other insurance service expenses paid 0 0  
Insurance acquisition cash flows 0 0  
Cash flows 0 0  
Net liability at 31 December 0 0 0
Non-life | Liability for incurred claims £m      
Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]      
Net liability at 1 January (355) (339)  
Contracts under the fair value transition approach 0 0  
Other contracts 0 0  
Insurance revenue 0 0  
Insurance service expenses (562) (533)  
Insurance service result (562) (533)  
Net finance expense from insurance and participating investment contracts (14) (7)  
Total change in profit or loss (576) (540)  
Premiums received 0 0  
Claims and other insurance service expenses paid 540 524  
Insurance acquisition cash flows 0 0  
Cash flows 540 524  
Net liability at 31 December £ (391) £ (355) £ (339)