| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Contourplan Ltd | 03411548 | 06/02/2003 | Dissolved |
| Mackworth Construction Services Ltd | 03718207 | 06/02/2003 | Dissolved |
| Wilmorton Enterprises Ltd. | 02901909 | 19/05/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BOILER AND RADIATOR MANUFACTURERS ASSOCIATION LIMITED(THE) | 00371055 | 06/05/1993 | 01/01/2015 | Dissolved |
| GENEFAX LIMITED | 00155708 | 15/10/1992 | 31/01/1994 | Dissolved |
| HEPWORTH DOMESTIC HEATING LIMITED | 00239577 | 23/10/1991 | 31/05/2000 | Not Trading |
| Halls Garden Products Ltd | 02739669 | 07/08/1995 | 25/11/1998 | Dissolved |
| Hepworth Extrusions Ltd | 00237128 | 23/10/1992 | 01/09/1998 | Dissolved |
| MACKWORTH BUSINESS SERVICES LIMITED | 02785306 | 14/10/2002 | 22/07/2013 | Not Trading |
| P.C. HENDERSON INTERNATIONAL SALES LIMITED | 01188467 | 28/10/1993 | 26/04/1999 | Dissolved |
| P.C. HENDERSON LIMITED | 01188468 | 28/10/1993 | 26/04/1999 | Bronze |
| SAUNIER DUVAL LIMITED | 00345993 | 28/10/1993 | 26/04/1999 | Dissolved |
| TAPTON HARRIER LIMITED | 02149388 | 01/11/1994 | 23/11/1998 | Dissolved |
| Tapton Products Ltd | 00413062 | 30/12/1997 | 31/05/2000 | Dissolved |
| VAILLANT GROUP UK LIMITED | 00294316 | 23/10/1992 | 31/05/2000 | Bronze |
| VAILLANT HOLDINGS LIMITED | 00965093 | 22/05/1992 | 31/05/2000 | Silver |
| VAILLANT HOME PRODUCTS LIMITED | 00543504 | 23/10/1991 | 26/05/2000 | Silver |
| VAILLANT INDUSTRIAL UK LIMITED | 01064184 | 11/09/1991 | 26/05/1995 | Gold |
| WERNER UK SALES & DISTRIBUTION LTD. | 00939028 | 22/12/1993 | 24/12/1993 | Amber |