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Directors' and key management remuneration - Directors (Details) - GBP (£)
£ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Directors' and key management remuneration    
Non-executive directors emoluments £ 1,547 £ 1,574
Chair and executive directors emoluments 6,425 6,408
Short-term compensation expense, directors 7,972 7,982
Amounts receivable under long-term incentive plans and share option plans 1,471 2,708
Total £ 9,443 £ 10,690