| Kestrel Partners LLP |
35,857,245 |
£16,852,905 |
| Canaccord Genuity Group INC |
12,800,000 |
£6,016,000 |
| Richard Griffiths and controlled holdings |
9,466,611 |
£4,449,307 |
| Gresham House Asset Management Limited |
9,338,098 |
£4,388,906 |
| Herald Investment Management Limited |
9,220,740 |
£4,333,748 |
| Draper Esprit VCT plc |
7,124,999 |
£3,348,750 |
| Elderstreet VCT Plc |
7,124,999 |
£3,348,750 |
| Lombard Odier Investment Managers |
6,959,863 |
£3,271,136 |
| Chelverton Asset Management Limited |
6,779,017 |
£3,186,138 |
| Unicorn Asset Management |
6,521,405 |
£3,065,060 |
| Janus Henderson Investors |
4,625,325 |
£2,173,903 |
| Cello Health plc |
4,076,239 |
£1,915,832 |
| JO Hambro Capital Management |
3,960,000 |
£1,861,200 |
| Octopus Investments Nominees Limited |
3,222,380 |
£1,514,519 |
| Livingbridge VC LLP |
3,196,072 |
£1,502,154 |
| Tony Dillon |
3,157,894 |
£1,484,210 |
| D Alderson |
878,356 |
£412,827 |