| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Aridmark Ltd | 04991179 | 06/01/2004 | Dissolved |
| Inhoco 3013 Ltd | 04956642 | 06/01/2004 | Dissolved |
| Kwell Ltd | 02406049 | 27/02/2003 | Dissolved |
| Lacepoint Ltd | 05005910 | 16/02/2004 | Dissolved |
| Penny & Giles Data Systems Ltd | 00852959 | 01/07/1997 | Dissolved |
| Riveroak Ltd | 04949932 | 05/07/2005 | Dissolved |
| Slotlook Limited | 02513814 | 20/06/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AAVID THERMALLOY LIMITED | 00919820 | 01/11/1997 | 03/05/2001 | Dissolved |
| ADVANCED ELECTRONIC TECHNOLOGIES LTD. | 02405910 | 08/08/2007 | 07/07/2008 | Dissolved |
| AMETEK (GB) LIMITED | 02569386 | 16/03/1992 | 31/10/1996 | Gold |
| ARCOLECTRIC 59 LIMITED | 05058006 | 04/03/2004 | 07/07/2008 | Dissolved |
| ARCOLECTRIC 61 LIMITED | 05058011 | 04/03/2004 | 07/07/2008 | Dissolved |
| B.P. Purchasing (Electronics) Ltd | 01174239 | 27/02/2003 | 01/07/2004 | Dissolved |
| BULGIN LIMITED | 04949934 | 04/12/2003 | 07/07/2008 | Gold |
| Bowthorpe E M P Ltd | 02266375 | 01/03/2000 | 11/05/2001 | Dissolved |
| CHECKIT PLC | 00448274 | 17/01/2003 | 07/07/2008 | Amber |
| Cirkit Holdings Ltd | 00564058 | 02/02/2006 | 07/07/2008 | Dissolved |
| DIGITRON INSTRUMENTATION LIMITED | 01240433 | 08/08/2007 | 07/07/2008 | Dissolved |
| ELEKTRON INSTRUMENTS LIMITED | 03867918 | 08/08/2007 | 07/07/2008 | Dissolved |
| ELEKTRON LIMITED | 05057988 | 04/03/2004 | 07/07/2008 | Dissolved |
| ELEKTRON TRUSTEES LIMITED | 04889051 | 23/09/2003 | 07/07/2008 | Dissolved |
| QUEENSGATE INSTRUMENTS LIMITED | 04232853 | 08/08/2007 | 07/07/2008 | Dissolved |
| TITMAN TIP TOOLS LIMITED | 01148083 | 01/11/2006 | 07/07/2008 | Gold |
| TOTAL CARBIDE LTD | 02427937 | 01/11/2006 | 07/07/2008 | Bronze |
| Trident Optim Ltd | 03308079 | 01/05/1997 | 31/01/1998 | Dissolved |