Share-based payments - Fair value of equity instruments granted (Details) £ / shares in Units, £ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2025
GBP (£)
Y
plan
£ / shares
|
Dec. 31, 2024
GBP (£)
Y
£ / shares
|
Dec. 31, 2023
GBP (£)
|
|
| Share-based payments | |||
| Number of employee option plans | plan | 2 | ||
| Total Expense Recognised | £ 9,667 | £ 7,486 | £ 8,816 |
| 2021 Incentive Plan | |||
| Share-based payments | |||
| Total Expense Recognised | £ 9,599 | £ 7,142 | 8,084 |
| Average share price at date of grant | £ / shares | £ 4 | £ 7.13 | |
| Expected volatility (%) | 85.00% | 90.00% | |
| Option life (years) | Y | 3.6 | 2.97 | |
| Risk-free interest rate (%) | 3.94% | 4.43% | |
| EMI Scheme | |||
| Share-based payments | |||
| Total Expense Recognised | £ 68 | £ 344 | £ 732 |