| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Heating & Management Services Ltd | 01998717 | 15/12/1991 | Dissolved |
| Helipipe Ltd | 01413136 | 12/12/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BLOOMSBURY HEAT & POWER LIMITED | 03626472 | 28/10/1998 | 21/11/2003 | Silver |
| BRING ENERGY CONCESSIONS LIMITED | 02240219 | 22/08/1991 | 21/11/2003 | Bronze |
| BRING ENERGY LIMITED | 01506399 | 29/12/1991 | 21/11/2003 | One Red Flag |
| CITIGEN (LONDON) LIMITED | 02427823 | 01/02/1993 | 08/03/1996 | Bronze |
| GOWER STREET HEAT AND POWER LIMITED | 04070944 | 13/10/2000 | 21/11/2003 | Dissolved |
| INDUSTRIELLE DE CHAUFFAGE ENTERPRISE UNITED KINGDOM LIMITED | 03463584 | 28/01/1998 | 21/11/2003 | Dissolved |
| Millbrook Community Heating Ltd | 03800692 | 09/07/1999 | 21/11/2003 | Dissolved |
| North Channel Energy Services Ltd | SC197767 | 09/07/1999 | 21/11/2003 | Dissolved |
| SOUTHAMPTON GEOTHERMAL HEATING COMPANY LIMITED(THE) | 02053176 | 15/03/1991 | 31/12/2005 | One Red Flag |