| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BOLTON CLARKE LIMITED | 07285402 | 15/06/2010 | Silver |
| Escapeline Ltd | 02677076 | 14/07/1992 | Dissolved |
| IONIX ADVANCED TECHNOLOGIES LTD | 07729411 | 20/04/2015 | Amber |
| JEMMAC SOFTWARE LIMITED | 03667442 | 01/07/2010 | Gold |
| Linden Instruments Ltd | 02487579 | 18/05/1992 | Dissolved |
| Telematic Ltd | 01698041 | 05/05/2000 | Dissolved |
| UK ELECTRONICS SKILLS FOUNDATION | SC300544 | 20/04/2021 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BLWA LIMITED | 00184549 | 22/11/2010 | 23/01/2018 | Not Trading |
| ELECTRONIC SYSTEMS COMMUNITY LTD | 07074268 | 19/01/2011 | 12/12/2018 | Dissolved |
| Emc Datacare Ltd | 01898482 | 05/05/2000 | 31/01/2009 | Dissolved |
| GAMBICA ASSOCIATION LIMITED(THE) | 01583204 | 29/01/2003 | 24/03/2009 | Silver |
| GAMBICA B2B COMPLIANCE LTD. | 05177060 | 22/11/2010 | 23/01/2018 | Bronze |
| GAMBICA EXHIBITIONS LIMITED | 01585964 | 22/11/2010 | 23/01/2018 | Not Trading |
| HITECH INSTRUMENTS LIMITED | 01563562 | 18/05/1992 | 31/01/2009 | Dissolved |
| MEASUREMENT TECHNOLOGY LIMITED | 01012778 | 05/11/1992 | 31/01/2009 | Dissolved |
| Mtl Instruments Ltd | 03034079 | 05/05/2000 | 31/01/2009 | Dissolved |
| Mtl Ltd | 02019640 | 05/05/2000 | 31/01/2009 | Dissolved |
| Mtl Safety Systems Ltd | 02018461 | 05/05/2000 | 31/01/2009 | Dissolved |
| Mtl Surge Protection Ltd | 02835096 | 05/05/2000 | 31/01/2009 | Dissolved |
| Mtl Systems Ltd | 02014359 | 05/05/2000 | 31/01/2009 | Dissolved |
| OCEAN TECHNICAL SYSTEMS LIMITED | 01501658 | 09/07/2007 | 31/01/2009 | Dissolved |
| RTK INSTRUMENTS LIMITED | 06250603 | 31/05/2007 | 31/01/2009 | Dissolved |
| SCIENTIFIC INSTRUMENTS MANUFACTURERS' (SIMA) 1985 LIMITED(THE) | 01932298 | 22/11/2010 | 23/01/2018 | Not Trading |
| THE MTL INSTRUMENTS GROUP LIMITED | 01871978 | 08/07/1991 | 31/03/2009 | Gold |
| Telematic Systems Ltd | 02952483 | 05/05/2000 | 31/01/2009 | Dissolved |