| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Distributed Power Systems Ltd | 05660627 | 15/01/2009 | Dissolved |
| HELIUS POWER LIMITED | 05499587 | 08/08/2005 | Dissolved |
| Helius Energy Beta Ltd | 06268530 | 15/01/2009 | Dissolved |
| Helius Greenfields Ltd | 06605677 | 15/01/2009 | Dissolved |
| Helius Greenswitch Ltd | 06605700 | 15/01/2009 | Dissolved |
| Helius Holdco 1 Ltd | 06605622 | 15/01/2009 | Dissolved |
| LIVERPOOL BIOMASS POWER LIMITED | 07434871 | 10/11/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Biomass Energy Ltd | SC160403 | 31/03/1998 | 19/05/2002 | Dissolved |
| Biomass Heating Investments Ltd | SC194722 | 30/03/2001 | 19/05/2002 | Dissolved |
| Biomass Processing Ltd | SC137351 | 08/09/1996 | 19/05/2002 | Dissolved |
| Border Biofuels (Charlesfield) Ltd. | SC152491 | 30/03/2001 | 19/05/2002 | Dissolved |
| Ecogen Kielder Biomass Ltd | 03328637 | 30/11/1998 | 19/05/2002 | Dissolved |
| Environmental Tree Services Ltd | SC222211 | 01/06/2002 | 31/08/2007 | Dissolved |
| HELIUS ENERGY GAMMA LTD | 06690364 | 08/10/2008 | 03/11/2014 | Dissolved |
| HELIUS ENERGY LIMITED | 05745512 | 09/06/2006 | 03/11/2014 | Dissolved |
| Incetec Ltd | 03150777 | 07/12/1998 | 19/05/2002 | Dissolved |
| ROTHES CORDE LIMITED | SC360559 | 25/11/2009 | 07/06/2011 | Bronze |
| RWE STALLINGBOROUGH LIMITED | 06269884 | 05/07/2007 | 25/09/2008 | Strike Off |
| Roves Energy Ltd | 04567249 | 18/10/2002 | 11/11/2005 | Dissolved |
| SOUTHAMPTON BIOMASS POWER LIMITED | 07321900 | 21/07/2010 | 03/11/2014 | Dissolved |
| THE TREE WISE MEN LIMITED | SC239852 | 19/11/2002 | 26/05/2023 | Amber |
| TOPLING LTD | SC237281 | 01/07/2012 | 17/09/2014 | Silver |
| The Electric Tree Co Ltd | SC152492 | 30/03/2001 | 19/05/2002 | Dissolved |
| Third Generation Ltd | SC152057 | 28/04/1996 | 19/05/2002 | Dissolved |