| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| OLD HALL CONSULTING LIMITED | 07461314 | 06/12/2010 | Amber |
| TELECENTRIC SOLUTIONS LIMITED | 03779638 | 13/09/2001 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CORBY POWER LIMITED | 02329494 | 28/09/2000 | 18/09/2001 | Gold |
| E.ON ENERGY SOLUTIONS LIMITED | 03407430 | 01/10/2001 | 04/07/2007 | Gold |
| E.ON UK PLC | 02366970 | 01/01/2004 | 31/08/2007 | Gold |
| E.ON UK TRADING LIMITED | 04178314 | 25/07/2001 | 15/08/2001 | Dissolved |
| ECONOMY POWER LIMITED | 03385578 | 17/06/2005 | 04/07/2007 | Not Trading |
| ENERGY RETAIL ASSOCIATION LIMITED | 04844678 | 19/09/2003 | 05/07/2007 | Not Trading |
| ESP UTILITIES GROUP LIMITED | 02612105 | 08/01/2018 | 21/06/2024 | Silver |
| GEN NET.COM LIMITED | 03757746 | 21/01/2002 | 15/09/2006 | Dissolved |
| METER PROVIDA INVESTMENTS LIMITED | 08720432 | 20/05/2014 | 21/05/2018 | One Red Flag |
| METER PROVIDA LIMITED | 04057886 | 20/05/2014 | 21/05/2018 | Insolvent |
| MIDLANDS SALES LIMITED | 02573405 | 04/02/2004 | 15/09/2006 | Dissolved |
| NFPA HOLDINGS LIMITED | 04017909 | 30/10/2000 | 18/12/2001 | Dissolved |
| NON-FOSSIL PURCHASING AGENCY LIMITED | 02365900 | 11/02/1999 | 31/10/2000 | Dissolved |
| PETROPLUS MARKETING LIMITED | 00819969 | 01/05/1994 | 31/03/1996 | Dissolved |
| POWERGEN WARM FRONT LIMITED | 04725781 | 01/01/2004 | 04/07/2007 | Dissolved |
| Powergen Energy Trading Ltd | 03585926 | 22/01/1999 | 28/11/2001 | Dissolved |
| UNIPER UK GAS LIMITED | 02436332 | 21/12/1999 | 22/10/2001 | Silver |
| Wavedriver Ltd | 02778534 | 28/06/1996 | 10/12/1998 | Dissolved |