| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Bradford Vision | 04295240 | 16/07/2003 | Dissolved |
| Jdr 1 Ltd | 03422957 | 01/10/1997 | Dissolved |
| Merchants Quarter Ltd | 04200300 | 29/08/2001 | Dissolved |
| Stemco West Yorkshire Ltd | 04076009 | 05/10/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRADFORD GRAMMAR SCHOOL TRUSTEE LIMITED | 04824725 | 10/06/2004 | 02/12/2006 | Amber |
| COMPACT EDUCATION BUSINESS SERVICES | 03469255 | 20/03/2001 | 30/11/2002 | Dissolved |
| FILTRONIC BROADBAND LIMITED | 03398105 | 04/03/1998 | 02/04/2004 | Silver |
| FILTRONIC COMTEK (UK) LIMITED | 02700306 | 01/12/1995 | 02/04/2004 | Dissolved |
| FILTRONIC PLC | 02891064 | 01/12/1995 | 02/04/2004 | Gold |
| FILTRONIC PLC | 02891064 | 03/08/1998 | 02/04/2004 | Gold |
| Filtronic Cable Communications Ltd | 03183533 | 09/06/1998 | 02/04/2004 | Dissolved |
| Filtronic Executive Share Option Trustees Ltd | 01845899 | 29/04/1998 | 02/04/2004 | Dissolved |
| Filtronic Microtek Ltd | 03398100 | 04/03/1998 | 02/04/2004 | Dissolved |
| Filtronic Quest Trustees Ltd | 03134295 | 29/04/1998 | 02/04/2004 | Dissolved |
| Filtronic Quest Trustees Ltd | 03134295 | 28/05/1999 | 02/04/2004 | Dissolved |
| ISOTEK (HOLDINGS) LIMITED | 03398090 | 27/01/2007 | 16/11/2010 | Bronze |
| PULSE LK | 03042647 | 01/12/1995 | 02/04/2004 | Dissolved |
| RFMD (UK) LIMITED | 02927965 | 01/12/1995 | 02/04/2004 | Dissolved |
| SOLUTIONS FOR THE PLANET LIMITED | 04375187 | 18/03/2002 | 31/08/2013 | Silver |
| Stemco West Yorkshire Ltd | 04076009 | 18/09/2000 | 05/10/2000 | Dissolved |
| Sunbridge Professional Services Ltd | 01405300 | 12/04/1994 | 16/06/1998 | Dissolved |
| TELEDYNE DEFENCE LIMITED | 01659830 | 29/04/1998 | 02/04/2004 | Dissolved |
| TELEDYNE PROPERTIES LIMITED | 03183532 | 29/04/1998 | 02/04/2004 | Dissolved |