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Operating expenses (Details) - GBP (£)
£ in Millions
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Operating expenses    
Salaries £ 1,254 £ 1,252
Bonus awards 223 217
Temporary and contract costs 80 106
Social security costs 187 180
Pension costs 169 151
- defined benefit schemes 59 60
- defined contribution schemes 110 91
Other 234 99
Staff costs 2,147 2,005
Premises and equipment 579 570
Depreciation and amortisation 508 469
Other administrative expenses 823 871
Administrative expenses 1,910 1,910
Operating expenses 4,057 3,915
Depreciation on right of use assets £ 53 £ 53