| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ADVANCED TECHNOLOGY VENTURES (UK) LTD | 06465051 | 18/02/2021 | Amber |
| AVR PHOTONICS GROUP LIMITED | 13122176 | 17/02/2021 | Bronze |
| CAMBRIDGE FINANCIAL DIRECTION LIMITED | 08429624 | 05/03/2013 | Gold |
| DATA CONVERSION SYSTEMS LIMITED | 02072115 | 05/10/2023 | Silver |
| EDMUND HOUSE TRADING LIMITED | 06024058 | 19/10/2015 | Dissolved |
| Exdt Ltd | 03179718 | 01/11/2003 | Dissolved |
| Grant Esop Trustees Ltd | 02402976 | 01/11/2003 | Dissolved |
| Grant/Ysi Environmental Systems Ltd | 02613373 | 01/11/2003 | Dissolved |
| LASER 2000 (UK) LIMITED | 02695835 | 18/02/2021 | Bronze |
| P.S. PROPERTY SERVICES LIMITED | 01853334 | 01/09/2019 | Silver |
| THE EDMUND TRUST | 02872186 | 08/03/2024 | Gold |
| Unitek Scientific Ltd | 03908916 | 01/11/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ELTEK LIMITED | 01886669 | 04/09/2007 | 24/10/2013 | Gold |
| EOPH LIMITED | 10227723 | 12/06/2016 | 17/06/2020 | One Red Flag |
| EPI 3000 LIMITED | 12109681 | 18/07/2019 | 10/09/2019 | Gold |
| G.I.C. TRUSTEES LIMITED | 01591553 | 01/11/2003 | 01/07/2013 | Not Trading |
| G.I.C. TRUSTEES LIMITED | 01591553 | 24/06/2004 | 01/07/2013 | Not Trading |
| GRANT INSTRUMENTS (CAMBRIDGE) LIMITED | 00658133 | 01/11/2003 | 31/12/2012 | Silver |
| GRANT INSTRUMENTS (CAMBRIDGE) LIMITED | 00658133 | 01/08/2004 | 31/12/2012 | Silver |
| GRANT INSTRUMENTS (DEVELOPMENTS) LIMITED | 00658372 | 01/10/2003 | 31/12/2012 | Dissolved |
| GRANT INSTRUMENTS (DEVELOPMENTS) LIMITED | 00658372 | 09/11/2009 | 31/12/2012 | Dissolved |
| GRANT SQUIRREL LIMITED | 00914430 | 01/11/2003 | 31/12/2012 | Dissolved |
| GRANT SQUIRREL LIMITED | 00914430 | 09/11/2009 | 31/12/2012 | Dissolved |
| THE EDMUND TRUST | 02872186 | 07/10/2015 | 20/10/2021 | Gold |
| UNIQSIS LIMITED | 06049119 | 31/01/2011 | 21/10/2013 | Insolvent |