| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| O'Hea Trustees Limited | 00628214 | 27/09/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BUILDING SERVICES RESEARCH AND INFORMATION ASSOCIATION(THE) | 00632760 | 03/11/1992 | 04/11/1995 | Bronze |
| CHICHESTER FESTIVITIES LIMITED | 01197428 | 20/09/1993 | 19/07/2005 | Dissolved |
| COLT BUILDING PRODUCTS LIMITED | 00905180 | 22/03/1992 | 02/04/2002 | Dissolved |
| COLT GROUP LIMITED | 00905918 | 12/06/1991 | 18/09/2000 | Amber |
| COLT GROUP SERVICES LIMITED | 00525650 | 29/11/1999 | 01/07/2004 | Dissolved |
| COLT INTERNATIONAL HOLDINGS LIMITED | 01917964 | 22/03/1992 | 02/04/2002 | Silver |
| COLT INTERNATIONAL LIMITED | 01222993 | 16/04/1992 | 01/12/2001 | Gold |
| COLT INVESTMENTS | 02647060 | 11/12/1991 | 17/04/2020 | Dissolved |
| COLT SERVICE LIMITED | 00442015 | 16/04/1992 | 01/02/2002 | Dissolved |
| COLT TRAINING AIDS LIMITED | 01063310 | 16/04/1992 | 02/04/2002 | Dissolved |
| COLT TRANSPORT LIMITED | 00470239 | 16/04/1992 | 02/04/2002 | Dissolved |
| HOLLAND HEATING UK LIMITED | 02518876 | 22/08/1991 | 04/10/1996 | Dissolved |
| Harsley Ltd | 00326446 | 22/03/1992 | 22/09/1999 | Dissolved |
| INTERNATIONAL FIRE TECHNOLOGY LIMITED | 02073110 | 22/03/1992 | 01/02/2008 | Dissolved |
| THE BRITISH OCCUPATIONAL HEALTH RESEARCH FOUNDATION | 03727119 | 04/03/1999 | 31/12/2003 | Dissolved |
| TROLDTEKT LIMITED | 00257636 | 09/05/1992 | 01/05/2001 | Gold |
| UNIVERSITY OF PORTSMOUTH ENTERPRISE LIMITED | 02353125 | 21/06/1993 | 12/12/1997 | Silver |
| VENTILATION LIMITED | 00258598 | 22/03/1992 | 02/04/2002 | Dissolved |
| W.H. COLT (LONDON) LIMITED | 00406610 | 16/02/1992 | 02/04/2002 | Dissolved |