Annual report pursuant to Section 13 and 15(d)

Share based compensation - Option Activity (Details)

v3.24.0.1
Share based compensation - Option Activity (Details) - GBP (£)
£ / shares in Units, £ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Options      
Exercised (in shares) (14,614,410) (5,823,534) (5,723,646)
Employee Stock Option [Member]      
Options      
Outstanding at the beginning of the period (in shares) 152,539,089    
Granted (in shares) 88,266,682    
Exercised (in shares) (14,614,410)    
Expired (in shares) (14,916,414)    
Forfeited (in shares) (20,124,772)    
Outstanding at the end of the period (in shares) 191,150,175 152,539,089  
Weighted Average Exercise Price Per Option      
Outstanding at the beginning of the period (in dollars per share) £ 0.44    
Granted (in dollars per share) 0.26    
Exercise price (in dollars per share) 0.01    
Expired (in dollars per share) 0.54    
Forfeited (in dollars per share) 0.18    
Outstanding at the end of the period (in dollars per share) £ 0.41 £ 0.44  
Additional disclosures      
Outstanding - Average Remaining Contractual Term (Years) 6 years 4 months 24 days    
Outstanding - Aggregate Intrinsic Value £ 4,601    
Exercisable - Options 111,671,247    
Exercisable - Weighted Average Exercise Price Per Option £ 0.57    
Exercisable - Average Remaining Contractual Term (Years) 4 years 9 months 18 days    
Exercisable - Aggregate Intrinsic Value £ 876    
Options with nominal exercise price      
Options      
Outstanding at the beginning of the period (in shares)      
Outstanding at the end of the period (in shares) 43,480,060    
Additional disclosures      
Exercisable - Options 7,608,744    
Options granted on market value at grant date      
Options      
Outstanding at the beginning of the period (in shares) 112,477,463    
Granted (in shares) 60,891,430 31,826,293 21,300,998
Exercised (in shares) (2,318,712)    
Expired (in shares) (14,681,143)    
Forfeited (in shares) (8,698,923)    
Outstanding at the end of the period (in shares) 147,670,115 112,477,463  
Weighted Average Exercise Price Per Option      
Outstanding at the beginning of the period (in dollars per share) £ 0.60    
Granted (in dollars per share) 0.38    
Exercise price (in dollars per share) 0.08    
Expired (in dollars per share) 0.55    
Forfeited (in dollars per share) 0.42    
Outstanding at the end of the period (in dollars per share) £ 0.53 £ 0.60  
Additional disclosures      
Outstanding - Average Remaining Contractual Term (Years) 5 years 10 months 24 days    
Outstanding - Aggregate Intrinsic Value £ 131    
Exercisable - Options 104,062,503    
Exercisable - Weighted Average Exercise Price Per Option £ 0.61    
Exercisable - Average Remaining Contractual Term (Years) 4 years 8 months 12 days    
Exercisable - Aggregate Intrinsic Value £ 94    
RSU      
Options      
Outstanding at the beginning of the period (in shares) 40,061,626    
Granted (in shares) 27,375,252    
Exercised (in shares) (12,295,698)    
Expired (in shares) (235,271)    
Forfeited (in shares) (11,425,849)    
Outstanding at the end of the period (in shares)   40,061,626  
Additional disclosures      
Outstanding - Average Remaining Contractual Term (Years) 8 years 1 month 6 days 8 years 4 months 24 days  
Outstanding - Aggregate Intrinsic Value £ 4,470 £ 8,014  
Exercisable - Average Remaining Contractual Term (Years) 6 years 3 months 18 days    
Exercisable - Aggregate Intrinsic Value £ 782