| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Graphite Ltd | 04965790 | 17/11/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMEY RAILTECH LIMITED | 03612744 | 01/10/1998 | 30/04/2001 | Dissolved |
| ARGON VENTURES LIMITED | 03560646 | 07/10/1998 | 25/06/2001 | Dissolved |
| Berkeley Environmental Systems Plc | 01426797 | 28/03/1992 | 30/06/1992 | Dissolved |
| CENTRICA BUSINESS SOLUTIONS (GENERATION) LIMITED | 02592745 | 16/01/1992 | 24/06/1994 | Gold |
| CENTRICA BUSINESS SOLUTIONS UK LIMITED | 01874716 | 04/03/1994 | 30/09/1994 | Amber |
| CITY GREENWICH LEWISHAM RAIL LINK PLC | 03169276 | 11/06/1996 | 31/07/1997 | Dissolved |
| COMMUNITY HEALTH FACILITIES (HOLDINGS) LIMITED | 03545090 | 03/06/1998 | 01/10/1998 | Silver |
| COMMUNITY HEALTH FACILITIES (OXFORD) LIMITED | 03408569 | 03/06/1998 | 01/10/1998 | Bronze |
| EDF ENERGY (ENERGY BRANCH) LIMITED | 02449611 | 24/11/1995 | 31/07/1997 | Dissolved |
| LONDON & CONTINENTAL RAILWAYS LIMITED | 02966054 | 12/12/1995 | 31/07/1997 | Silver |
| LONDON ELECTRICITY GAS LIMITED | 03112789 | 24/11/1995 | 31/07/1997 | Dissolved |
| London Total Gas Ltd | 02741630 | 07/10/1992 | 31/07/1997 | Dissolved |
| MASS TRANSIT POWER LTD | 03219337 | 06/09/1996 | 31/07/1997 | Dissolved |
| MITIEFM SERVICES LIMITED | 02820560 | 01/09/1997 | 01/10/1998 | One Red Flag |
| RESONATE GROUP LIMITED | 05839985 | 26/04/2007 | 31/05/2010 | Silver |
| RESONATE HOLDINGS LIMITED | 05839978 | 26/04/2007 | 31/05/2010 | Silver |
| THAMES VALLEY POWER LIMITED | 03041643 | 31/03/1995 | 28/11/1995 | Dissolved |
| Thames Valley Generation Ltd | 03243343 | 06/09/1996 | 31/07/1997 | Dissolved |
| UK POWER NETWORKS SERVICES (ENTERPRISES) LIMITED | 02611182 | 27/02/1996 | 31/07/1997 | Gold |