| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ATCO1967 Ltd | 01740298 | 04/10/1991 | Dissolved |
| C-TEC HOLDING LIMITED | 06605487 | 11/11/2008 | Not Trading |
| COMPUTIONICS GROUP LIMITED | 05498299 | 04/07/2005 | Gold |
| COMPUTIONICS LIMITED | 01559261 | 31/12/1991 | Silver |
| COUNTRY BARNS LIMITED | 12443774 | 05/02/2020 | Amber |
| Hart, C (Wigan) Ltd | 00299100 | 31/12/1991 | Dissolved |
| SIGNET (AC) LIMITED | 02949875 | 19/07/1994 | Silver |
| SIGNET ELECTRONICS LTD. | 03414693 | 05/08/1997 | Not Trading |
| SOLID STATE SECURITY LIMITED | 02170478 | 31/12/1991 | Gold |
| Second C-Tec Invest Ltd | 06603707 | 27/05/2008 | Dissolved |
| THE OPEN PROTOCOL COMPANY LIMITED | 07945853 | 10/02/2012 | Not Trading |
| WILLIAMS CONSTRUCTION (LANCASHIRE) LIMITED | 01548376 | 31/12/1991 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Avx Systems Ltd | 02772615 | 22/12/1993 | 21/02/1994 | Dissolved |
| SIGNET (AC) LIMITED | 02949875 | 19/07/1997 | 20/11/1997 | Silver |