Annual report pursuant to Section 13 and 15(d)

Share based compensation - Stock Options Outstanding (Details)

v3.6.0.2
Share based compensation - Stock Options Outstanding (Details)
12 Months Ended
Dec. 31, 2016
£ / shares
shares
Share-based compensation  
Outstanding - Total Share Options | shares 49,237,290
Outstanding - Weighted-Average Remaining Contractual Life 8 years 2 months 12 days
Outstanding - Weighted Average Exercise Price £ 0.58
Exercisable - Total Share Options | shares 17,167,747
Exercisable - Weighted-Average Exercise Price £ 0.41
Exercise Price $0 - $0.25  
Share-based compensation  
Exercise Price, Upper Range Limit £ 0.25
Outstanding - Total Share Options | shares 9,858,104
Outstanding - Weighted-Average Remaining Contractual Life 6 years 7 months 6 days
Outstanding - Weighted Average Exercise Price £ 0.11
Exercisable - Total Share Options | shares 6,482,204
Exercisable - Weighted-Average Exercise Price £ 0.11
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 19,156,064
Outstanding - Weighted-Average Remaining Contractual Life 8 years 1 month 6 days
Outstanding - Weighted Average Exercise Price £ 0.42
Exercisable - Total Share Options | shares 8,975,893
Exercisable - Weighted-Average Exercise Price £ 0.42
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 1,646,000
Outstanding - Weighted-Average Remaining Contractual Life 9 years 10 months 24 days
Outstanding - Weighted Average Exercise Price £ 0.58
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 15,493,264
Outstanding - Weighted-Average Remaining Contractual Life 9 years 6 months
Outstanding - Weighted Average Exercise Price £ 0.93
Exercisable - Total Share Options | shares 559,049
Exercisable - Weighted-Average Exercise Price £ 0.89
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 1,498,243
Outstanding - Weighted-Average Remaining Contractual Life 9 years 4 months 24 days
Outstanding - Weighted Average Exercise Price £ 1.06
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 1,585,615
Outstanding - Weighted-Average Remaining Contractual Life 8 years 4 months 24 days
Outstanding - Weighted Average Exercise Price £ 1.82
Exercisable - Total Share Options | shares 1,150,601
Exercisable - Weighted-Average Exercise Price £ 1.82