| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BELLING LEE LIMITED | 02534149 | 24/08/1991 | 19/10/2005 | Amber |
| DIALIGHT CIRCUIT PROTECTION LIMITED | 02822023 | 09/07/1993 | 19/10/2005 | Dissolved |
| DIALIGHT DISCONNECT LIMITED | 00256980 | 01/06/1992 | 19/10/2005 | Dissolved |
| DIALIGHT ELECTRO-MAGNETICS LIMITED | 02822404 | 09/07/1993 | 19/10/2005 | Dissolved |
| DIALIGHT EUROPE LIMITED | 00186538 | 20/04/1992 | 19/10/2005 | One Red Flag |
| DIALIGHT PLC | 02486024 | 28/03/1992 | 12/09/2012 | Silver |
| ENGINUITY | 02324869 | 23/05/2007 | 20/05/2009 | Gold |
| GAMBICA ASSOCIATION LIMITED(THE) | 01583204 | 03/10/2002 | 12/10/2005 | Silver |
| MOBREY OVERSEAS SALES LIMITED | 02853860 | 20/05/1994 | 15/07/2005 | Dissolved |
| Mobrey Transducers Ltd | 02853876 | 20/05/1994 | 15/07/2005 | Dissolved |
| NORWICH AERO PRODUCTS LIMITED | 02858312 | 20/05/1994 | 11/06/2003 | Dissolved |
| PED LIMITED | 02649467 | 28/02/1992 | 19/10/2005 | Dissolved |
| PERA INTERNATIONAL | 00412652 | 16/12/1998 | 20/06/2007 | Silver |
| PIEZOTAG LIMITED | 05021107 | 19/04/2004 | 01/07/2012 | Dissolved |
| PRESSURE SYSTEMS INTERNATIONAL LIMITED | 02858303 | 20/05/1994 | 11/06/2003 | Bronze |
| ROSEMOUNT MEASUREMENT LIMITED | 00293743 | 07/01/2000 | 15/07/2005 | Amber |
| ROSEMOUNT TOPCO LIMITED | 04191115 | 13/06/2001 | 15/07/2005 | Strike Off |
| ROXBORO ANALYTICAL LIMITED | 05419416 | 16/05/2005 | 19/10/2005 | Dissolved |
| ROXBORO LIMITED | 02858310 | 20/05/1994 | 19/10/2005 | Dissolved |
| ROXBORO OVERSEAS LIMITED | 02534146 | 24/08/1991 | 19/10/2005 | One Red Flag |
| ROXBORO TECHNOLOGY | 01991750 | 02/09/1996 | 19/10/2005 | Dissolved |
| SCIENTIFIC INSTRUMENT MAKERS HALL LIMITED | 01302882 | 25/10/2007 | 24/10/2013 | Silver |
| SDI GROUP PLC | 06385396 | 27/06/2008 | 11/09/2012 | Gold |
| SHILDON CONTROLS LIMITED | 00977320 | 08/06/1999 | 19/10/2005 | Dissolved |
| SHILDON INVESTMENTS LIMITED | 02983635 | 08/06/1999 | 19/10/2005 | Dissolved |
| SOLARTRON INSTRUMENTS LIMITED | 02858371 | 20/05/1994 | 26/09/2005 | Dissolved |
| SOLARTRON METROLOGY 2001 LIMITED | 02858374 | 20/05/1994 | 26/09/2005 | Dissolved |
| SOLARTRON METROLOGY LIMITED | 04220056 | 13/06/2001 | 26/09/2005 | Silver |
| SOLIFI GROUP (UK) LIMITED | 02869895 | 01/10/2002 | 15/08/2003 | Gold |
| Solartron Instruments (1994) Ltd | 02853856 | 20/05/1994 | 26/09/2005 | Dissolved |
| Solartron Metrology (1994) Ltd | 02853875 | 20/05/1994 | 26/09/2005 | Dissolved |
| TECHUK LTD | 01200318 | 02/11/2005 | 25/05/2007 | Silver |
| The Federation of The Electronics Industry | 04095789 | 01/01/2001 | 15/05/2002 | Dissolved |
| WESTON AERO 2003 | 03817397 | 15/09/1999 | 11/06/2003 | Dissolved |
| WGL (2003) LIMITED | 04220046 | 13/06/2001 | 19/10/2005 | Dissolved |
| Weston Aerospace (1994) Ltd | 02858309 | 20/05/1994 | 11/06/2003 | Dissolved |
| Weston Aerospace (2003) Ltd | 02852989 | 20/05/1994 | 11/06/2003 | Dissolved |
| ZOOMCLOSE LIMITED | 04725744 | 12/05/2003 | 19/10/2005 | Dissolved |