Annual report pursuant to Section 13 and 15(d)

Share based compensation - Stock Options Outstanding (Details)

v3.19.3.a.u2
Share based compensation - Stock Options Outstanding (Details)
12 Months Ended
Dec. 31, 2019
£ / shares
shares
Share-based compensation  
Outstanding - Weighted-Average Remaining Contractual Life 6 years 9 months 18 days
Exercise Price $0  
Share-based compensation  
Exercise price | shares 0
Outstanding - Total Share Options | shares 12,231,786
Outstanding - Weighted-Average Remaining Contractual Life 8 years 8 months 12 days
Outstanding - Weighted Average Exercise Price £ 0.00
Exercisable - Total Share Options | shares 816,075
Exercise Price $0.01 - $0.25  
Share-based compensation  
Exercise Price, Lower Range Limit £ 0.01
Exercise Price, Upper Range Limit £ 0.25
Outstanding - Total Share Options | shares 5,751,306
Outstanding - Weighted-Average Remaining Contractual Life 3 years 1 month 6 days
Outstanding - Weighted Average Exercise Price £ 0.14
Exercisable - Total Share Options | shares 4,920,306
Exercisable - Weighted-Average Exercise Price £ 0.12
Exercise Price $0.26 - $0.50  
Share-based compensation  
Exercise Price, Lower Range Limit 0.26
Exercise Price, Upper Range Limit £ 0.50
Outstanding - Total Share Options | shares 15,451,247
Outstanding - Weighted-Average Remaining Contractual Life 5 years 4 months 24 days
Outstanding - Weighted Average Exercise Price £ 0.42
Exercisable - Total Share Options | shares 12,908,168
Exercisable - Weighted-Average Exercise Price £ 0.41
Exercise Price $0.51 - $0.75  
Share-based compensation  
Exercise Price, Lower Range Limit 0.51
Exercise Price, Upper Range Limit £ 0.75
Outstanding - Total Share Options | shares 33,649,220
Outstanding - Weighted-Average Remaining Contractual Life 7 years 6 months
Outstanding - Weighted Average Exercise Price £ 0.63
Exercisable - Total Share Options | shares 16,744,149
Exercisable - Weighted-Average Exercise Price £ 0.61
Exercise Price $0.76 - $1.00  
Share-based compensation  
Exercise Price, Lower Range Limit 0.76
Exercise Price, Upper Range Limit £ 1.00
Outstanding - Total Share Options | shares 17,894,778
Outstanding - Weighted-Average Remaining Contractual Life 6 years 6 months
Outstanding - Weighted Average Exercise Price £ 0.93
Exercisable - Total Share Options | shares 13,651,919
Exercisable - Weighted-Average Exercise Price £ 0.92
Exercise Price $1.01 - $1.50  
Share-based compensation  
Exercise Price, Lower Range Limit 1.01
Exercise Price, Upper Range Limit £ 1.50
Outstanding - Total Share Options | shares 2,283,984
Outstanding - Weighted-Average Remaining Contractual Life 7 years 6 months
Outstanding - Weighted Average Exercise Price £ 1.19
Exercisable - Total Share Options | shares 1,448,622
Exercisable - Weighted-Average Exercise Price £ 1.13
Exercise Price $1.51 - $2.00  
Share-based compensation  
Exercise Price, Lower Range Limit 1.51
Exercise Price, Upper Range Limit £ 2.00
Outstanding - Total Share Options | shares 1,615,801
Outstanding - Weighted-Average Remaining Contractual Life 7 years 9 months 18 days
Outstanding - Weighted Average Exercise Price £ 1.70
Exercisable - Total Share Options | shares 1,463,957
Exercisable - Weighted-Average Exercise Price £ 1.70