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Operating costs - Staff costs (Details) - GBP (£)
£ in Millions
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Aggregate remuneration      
Wages and salaries £ 1,548 £ 1,557 £ 1,336
Share-based incentive plans 48 59 50
Employer’s social security 115 107 83
Employer’s pension      
Defined benefit plans 67 36 82
Defined contribution plans 44 33 25
Other post employment plans 8 3 10
Staff costs £ 1,830 £ 1,795 £ 1,586