v3.26.1
Related party transactions - Summary of transactions with other related parties (Details)
£ in Thousands
6 Months Ended
Jun. 30, 2026
GBP (£)
shares
Options
Jun. 30, 2025
GBP (£)
Options
shares
Jul. 31, 2025
Jan. 24, 2025
Related party transactions        
Aggregate gain on directors' exercise of share options | £ £ 0 £ 0    
Stuart Simpson        
Related party transactions        
Employment contract, anti-dilution provision, related party's right of ownership after any awards are issued     2.00% 2.00%
Number of share options awarded | Options 772,059 694,445    
Dmhnal Slattery        
Related party transactions        
Employment contract, anti-dilution provision, related party's right of ownership after any awards are issued       1.40%
Number of share options awarded | Options 490,258 953,950    
Forfeited during the period | Options 1,361,922      
Clahane Capital SEZC Ltd        
Related party transactions        
Services received, related party transaction | £ £ 17 £ 0    
Amount outstanding | £ £ 4 £ 0    
Other independent members of the Board of Directors        
Related party transactions        
Number of share options and restricted stock units awarded | shares 83,159 36,808