| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Colston Developments Ltd | 00673709 | 31/08/1991 | Dissolved |
| HYDRONIC (UK) LIMITED | 03795288 | 22/10/2002 | Dissolved |
| Hydronic Ltd | 04563691 | 22/10/2002 | Dissolved |
| Mechanical Services (South West) Ltd | 01586975 | 31/07/1991 | Dissolved |
| THERMAL TECHNOLOGY (SALES) LTD. | 02882538 | 06/01/1994 | Dissolved |
| THERMAL TECHNOLOGY (SALES) LTD. | 02882538 | 06/01/1994 | Dissolved |
| Thermal International Holdings Plc | 00780765 | 31/12/1991 | Dissolved |
| Thermal Technology Ltd | 01655251 | 31/07/1991 | Dissolved |
| Wren Developments Ltd | 01937348 | 28/02/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Applegate,G,& Sons Ltd | 01948059 | 31/12/1991 | 21/02/1994 | Dissolved |
| Dynapac Ltd | 00884351 | 01/11/1991 | 31/01/1994 | Dissolved |
| GUARDESIGN COMPANY LIMITED | 01036589 | 31/12/1990 | 22/05/1993 | Dissolved |
| POLYCRAFT ENGINEERING LIMITED | 01759048 | 31/03/1991 | 22/05/1993 | Dissolved |
| Rocraft Ltd | 01802767 | 01/11/1989 | 22/05/1993 | Dissolved |
| Rode Farms Ltd | 01308496 | 31/12/1991 | 08/12/1993 | Dissolved |
| Terrett,F H,Ltd | 00673900 | 01/11/1989 | 22/05/1993 | Dissolved |
| WEGER AIR SOLUTIONS UK LIMITED | 08869995 | 03/04/2014 | 02/07/2014 | Dissolved |