| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Applied Environmental Technologies Ltd | 04043202 | 14/09/2000 | Dissolved |
| ENERGY JOULE LIMITED | 08732002 | 14/10/2013 | Dissolved |
| Grec Holdings Ltd | 05661940 | 22/12/2005 | Dissolved |
| KATALIS ENERGY LTD | 07593264 | 06/04/2011 | Dissolved |
| KATALIS VO2P LTD | 07593315 | 06/04/2011 | Dissolved |
| Merchant Technology Ltd | 03436024 | 18/06/1999 | Dissolved |
| S.J. Lawrence of Bath Ltd. | 02888448 | 17/01/1994 | Dissolved |
| SITE REMEDIATION SERVICES LIMITED | 03635482 | 11/06/1999 | Insolvent |
| Soilrem Ltd | 03831397 | 09/01/2002 | Dissolved |
| South Wales Power Station Co Ltd | 05236347 | 20/09/2004 | Dissolved |
| THE CLEVER GREEN CARDIFF HUB LIMITED | 11345067 | 03/05/2018 | Strike Off |
| THE CLEVER GREEN MENDIP HUB LIMITED | 11374487 | 22/05/2018 | Dissolved |
| THE GREEN RENEWABLE ENERGY COMPANY LIMITED | 05087150 | 29/03/2004 | Dissolved |
| The Green Energy Co Ltd | 04126201 | 15/12/2000 | Dissolved |
| The Original Paper Tie Co. Ltd. | 02888153 | 17/01/1994 | Dissolved |
| VEGETABLE OIL POWER PRODUCTION LIMITED | 06970061 | 22/07/2009 | Dissolved |
| VO2P LIMITED | 06811468 | 05/02/2009 | Dissolved |
| Winter & Day Ltd. | 02888158 | 17/01/1994 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CORONA ENERGY RETAIL 3 LIMITED | 02746961 | 14/09/1992 | 02/05/2000 | Gold |
| FLEX FUELS ENERGY LIMITED | 06003328 | 20/11/2006 | 07/03/2008 | Dissolved |
| SMART ENERGY OPTIMISATION LIMITED | 05684674 | 26/01/2006 | 28/02/2007 | Not Trading |
| Saracen Telecommunications Ltd | 02990165 | 18/06/1997 | 07/04/1999 | Dissolved |
| THE CLEVER GREEN PORTAL COMPANY LIMITED | 10972099 | 20/09/2017 | 26/06/2020 | Strike Off |