v3.26.1
Share capital and reserves - Ordinary shares (Details)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
GBP (£)
shares
Jun. 30, 2026
GBP (£)
Dec. 31, 2025
GBP (£)
Share capital and reserves        
Proceeds received   £ 39,935,000    
Remaining commitment fee in share-based payment reserve     £ 36,053,000 £ 34,215,000
Share capital        
Share capital and reserves        
Number of shares issued | shares 36,787,686 36,787,686    
Premium arising   £ 27,713    
Share premium        
Share capital and reserves        
Premium arising   £ 61,283,000    
2021 Incentive Plan | Share capital        
Share capital and reserves        
Number of shares issued | shares 517,057 517,057    
Premium arising   £ 390    
EMI Scheme        
Share capital and reserves        
Proceeds received   £ 31,000    
EMI Scheme | Share capital        
Share capital and reserves        
Number of shares issued | shares 18,309 18,309    
Premium arising   £ 13    
EMI Scheme | Share premium        
Share capital and reserves        
Premium arising   31,000    
At the market programme        
Share capital and reserves        
Proceeds received   £ 39,904,000    
At the market programme | Share capital        
Share capital and reserves        
Number of shares issued | shares 25,725,383 25,725,383    
Premium arising   £ 19,512    
At the market programme | Share premium        
Share capital and reserves        
Premium arising   £ 39,885,000    
Conversion of preferred shares        
Share capital and reserves        
Aggregate stated value of converted preferred shares | $ $ 23,000      
Preferred share conversion shares | shares 10,192,489 10,192,489    
Outstanding aggregate stated value | $ $ 2,000      
Conversion of preferred shares | Share capital        
Share capital and reserves        
Number of shares issued | shares 10,192,489 10,192,489    
Premium arising   £ 7,544    
Conversion of preferred shares | Share premium        
Share capital and reserves        
Premium arising   £ 20,628,000    
ELOC commitment fee        
Share capital and reserves        
Percentage Of commitment fee 50.00% 50.00%    
Average share price | $ / shares $ 2.99      
Remaining commitment fee in share-based payment reserve     £ 755,000  
Sharebased payment charge for commitment fees deliverable in ordinary shares $ 2,000 £ 1,628,000    
ELOC commitment fee | Share capital        
Share capital and reserves        
Number of shares issued | shares 334,448 334,448    
Premium arising   £ 254    
ELOC commitment fee | Share premium        
Share capital and reserves        
Premium arising   £ 739,000    
Ordinary Shares        
Share capital and reserves        
Number of shares issued | shares 36,787,686 36,787,686