Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Schedule of stock options activity (Details)

v3.22.1
Schedule of stock options activity (Details)
12 Months Ended
Dec. 31, 2021
shares
£ / shares
Dec. 31, 2020
shares
£ / shares
Dec. 31, 2019
shares
£ / shares
Share-based Payments      
Beginning Balance, Number of shares | shares 5,329,230 4,966,740 4,221,050
Weighted average exercise price, Outstanding, Beginning balance | £ / shares £ 0.46 £ 0.42 £ 0.10
Number of share options, Outstanding, Beginning balance | shares 465,490 823,190
Weighted average exercise price, Outstanding, Beginning balance | £ / shares £ 1.08 £ 2.07
Number of share options, Outstanding, Beginning balance | shares
Weighted average exercise price, Outstanding, Beginning balance | £ / shares
Number of share options, Outstanding, Beginning balance | shares (103,000) (77,500)
Weighted average exercise price, Outstanding, Beginning balance | £ / shares £ 1.31 £ 0.60
Ending Balance, Number of shares | shares 5,329,230 5,329,230 4,966,740
Weighted average exercise price, Outstanding, Beginning balance | £ / shares £ 0.46 £ 0.46 £ 0.42
Number of share options, Outstanding, Beginning balance | shares 5,329,230 5,329,230 4,492,740
Weighted average exercise price, Outstanding, Beginning balance | £ / shares £ 0.46 £ 0.46 £ 0.32
Number of share options, Outstanding, Beginning balance | shares 474,000
Weighted average exercise price, Outstanding, Beginning balance | £ / shares £ 1.34