| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Mainmet Leasing Ltd | 00501717 | 13/12/1991 | Dissolved |
| Mainmet Ltd | 01512063 | 13/12/1991 | Dissolved |
| Mainmet Systems Ltd | 01611665 | 13/12/1991 | Dissolved |
| Minerva Electronics Ltd | 01926049 | 13/12/1991 | Dissolved |
| R K Mainmet Ltd | 01684802 | 13/12/1991 | Dissolved |
| Synage Ltd | 03833838 | 31/08/1999 | Dissolved |
| Valiant Energy (Uk) Ltd | 04127559 | 19/12/2000 | Dissolved |
| Valiant Energy (Uk) Ltd | 04127559 | 19/12/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Energy Services Partnership Ltd | 03432292 | 23/10/1997 | 29/06/1999 | Dissolved |
| ISTA ENERGY SOLUTIONS LIMITED | 03752572 | 16/06/1999 | 29/06/1999 | Amber |
| LINGSOUTH LIMITED | 00994053 | 13/12/1991 | 30/09/1992 | Not Trading |
| Rk Clorius Mainmet Ltd | 03109447 | 03/10/1995 | 29/06/1999 | Dissolved |
| SOUTH EAST LONDON COMBINED HEAT AND POWER LIMITED | 02489384 | 11/07/1994 | 17/12/1996 | Silver |
| SWITCH2 ENERGY LIMITED | 02409803 | 30/09/1992 | 29/06/1999 | Silver |
| THE ASSOCIATION FOR DECENTRALISED ENERGY | 00917116 | 29/06/1992 | 24/06/1998 | Silver |