| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AITCHEE ENGINEERING LIMITED | 05882888 | 25/08/2006 | Bronze |
| ARMFIELD LIMITED | 01962034 | 22/01/2015 | One Red Flag |
| ARMFIELD TECHNICAL EDUCATION COMPANY LIMITED | 01523896 | 22/01/2015 | Not Trading |
| BORDEAUX ACQUISITION LIMITED | 07510463 | 18/03/2011 | Not Trading |
| COOLLED LIMITED | 07654232 | 17/02/2016 | Silver |
| CRYSTALLON LIMITED | 07308262 | 17/07/2017 | Not Trading |
| DAVID CICUREL (INVESTMENTS) 2002 LIMITED | 03794227 | 12/07/1999 | Dissolved |
| DEBEN UK LIMITED | 03208255 | 18/03/2011 | Silver |
| DIA-STRON LIMITED | 02197540 | 31/03/2016 | Silver |
| EM TECHNOLOGIES LIMITED | 05341418 | 09/06/2009 | Not Trading |
| EWB SOLUTIONS LTD. | 03755592 | 28/11/2016 | Amber |
| FIRE TESTING TECHNOLOGY LIMITED | 02387681 | 24/05/2005 | Silver |
| FTT SCIENTIFIC LIMITED | 07478065 | 23/12/2010 | Not Trading |
| GDS INSTRUMENTS LIMITED | 01646739 | 06/03/2012 | Not Trading |
| GEOTEK CORING LIMITED | 02810844 | 20/05/2022 | Silver |
| GEOTEK HOLDING LIMITED | 10610034 | 20/05/2022 | Bronze |
| GEOTEK LIMITED | 10612823 | 20/05/2022 | Silver |
| GLOBAL BRAND INVESTMENTS LIMITED | 07412348 | 19/10/2010 | Dissolved |
| GLOBAL DIGITAL SYSTEMS LIMITED | 01459108 | 06/03/2012 | Silver |
| HEATH SCIENTIFIC COMPANY LIMITED | 02985879 | 28/05/2020 | Not Trading |
| JUDGES CAPITAL LIMITED | 07003607 | 28/08/2009 | Not Trading |
| JUDGES SCIENTIFIC PLC | 04597315 | 04/12/2002 | Gold |
| KORVUS TECHNOLOGY LTD | 09491733 | 18/10/2020 | Silver |
| MAGSPUTTER LIMITED | 11657432 | 14/08/2024 | Silver |
| MARVIN'S MAGIC LIMITED | 03879058 | 21/09/2015 | Bronze |
| MOORFIELD NANOTECHNOLOGY LIMITED | 03044718 | 14/12/2020 | Silver |
| OXFORD CRYOSYSTEMS LIMITED | 00788353 | 17/07/2017 | Silver |
| PE. FIBEROPTICS LIMITED | 05524971 | 02/09/2005 | Bronze |
| POLARON INSTRUMENTS LIMITED | 04258603 | 11/09/2009 | Not Trading |
| QUORUM TECHNOLOGIES LIMITED | 04273003 | 09/06/2009 | Silver |
| SCIENTIFICA LTD | 03286415 | 26/06/2013 | Silver |
| SIRCAL INSTRUMENTS (U.K.) LIMITED | 01592093 | 18/03/2010 | Silver |
| SPECTRA-MAP LIMITED | 03962145 | 20/05/2022 | Silver |
| STANTON REDCROFT LIMITED | 03477206 | 22/03/2006 | Not Trading |
| TEER COATINGS LIMITED | 01643376 | 14/08/2024 | Gold |
| THERMAL HAZARD TECHNOLOGY LIMITED | 02991756 | 28/05/2020 | Silver |
| UHV DESIGN LIMITED | 04133945 | 21/02/2006 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DORMANT COMPANY 04528421 LIMITED | 04528421 | 05/07/2004 | 06/09/2007 | Dissolved |
| JAMES GALT & CO. LIMITED | 00135476 | 16/11/2010 | 17/07/2019 | Bronze |
| POOLE INVESTMENTS LIMITED | 02282021 | 23/06/2004 | 06/09/2007 | Insolvent |
| SOLOGLADE LIMITED | 02837323 | 08/12/2011 | 15/05/2014 | One Red Flag |
| TECTONIC GOLD PLC | 05173250 | 08/07/2004 | 14/01/2010 | Amber |