| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ARKEX GROUP LIMITED | 08277594 | 01/11/2012 | Dissolved |
| BROSNAICH VENTURES LIMITED | 09860647 | 06/11/2015 | Bronze |
| INVENTA THERAPEUTICS LIMITED | 11032260 | 21/10/2019 | Amber |
| Sirus Ltd. | 04065814 | 12/03/2004 | Dissolved |
| Sirus Ltd. | 04065814 | 19/06/2006 | Dissolved |
| Sirus Pharmaceuticals Ltd | 02740120 | 12/03/2004 | Dissolved |
| Sirus Pharmaceuticals Ltd | 02740120 | 19/06/2006 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALTERNOX SCIENTIFIC LTD | 12489336 | 28/02/2020 | 12/12/2023 | Amber |
| ARK GEOPHYSICS LTD. | 01971085 | 28/09/2011 | 05/11/2015 | Dissolved |
| ARKEX INSTRUMENTS LIMITED | 09361036 | 18/12/2014 | 05/11/2015 | Dissolved |
| ARKEX LIMITED | 04255000 | 16/12/2008 | 05/11/2015 | Dissolved |
| ARKEX LIMITED | 04255000 | 17/08/2012 | 05/11/2015 | Dissolved |
| NEURONOSTICS LIMITED | 11123728 | 27/09/2018 | 07/11/2019 | Gold |
| PERTINAX PHARMA LIMITED | 09557364 | 08/12/2015 | 10/04/2020 | Amber |
| SOSEI R&D LTD. | 03911256 | 01/12/2001 | 01/07/2008 | Dissolved |
| SOSEI R&D LTD. | 03911256 | 19/06/2006 | 01/07/2008 | Dissolved |