| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| GEOTEK CORING LIMITED | 02810844 | 20/05/2022 | Silver |
| GEOTEK HOLDING LIMITED | 10610034 | 20/05/2022 | Bronze |
| GEOTEK LIMITED | 10612823 | 20/05/2022 | Gold |
| HEATH SCIENTIFIC COMPANY LIMITED | 02985879 | 28/05/2020 | Not Trading |
| HENNIKER SCIENTIFIC LIMITED | 06703135 | 02/04/2023 | Gold |
| JUDGES SCIENTIFIC PLC | 04597315 | 03/03/2015 | Gold |
| KORVUS TECHNOLOGY LTD | 09491733 | 18/10/2020 | Gold |
| MAGSPUTTER LIMITED | 11657432 | 14/08/2024 | Silver |
| MOORFIELD NANOTECHNOLOGY LIMITED | 03044718 | 03/12/2019 | Silver |
| OCTOPUS AIM VCT 2 PLC | 05528235 | 01/01/2022 | Silver |
| R. J. LEWIS LTD. | 04696457 | 30/06/2021 | Dissolved |
| ROCKWASH GEODATA LTD | 07272991 | 27/06/2024 | Bronze |
| SOFTWARE CIRCLE PLC | 03983312 | 18/09/2024 | Amber |
| SPECTRA-MAP LIMITED | 03962145 | 20/05/2022 | Gold |
| TEER COATINGS LIMITED | 01643376 | 14/08/2024 | Gold |
| THERMAL HAZARD TECHNOLOGY LIMITED | 02991756 | 28/05/2020 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|