| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ATENTIS LIMITED | 05303095 | 02/12/2004 | Dissolved |
| CM90 LIMITED | 09292900 | 03/11/2014 | Gold |
| Distributed Power Systems Ltd | 05660627 | 15/01/2009 | Dissolved |
| HELIUS POWER LIMITED | 05499587 | 19/07/2005 | 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 |
| INTAGRUS LIMITED | 09704230 | 27/07/2015 | Dissolved |
| LIVERPOOL BIOMASS POWER LIMITED | 07434871 | 10/11/2010 | Dissolved |
| Roobikon Ltd | 04867612 | 14/08/2003 | Dissolved |
| The Tree of Dreams Co Ltd | 04013899 | 24/11/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| HELIUS ENERGY GAMMA LTD | 06690364 | 15/01/2009 | 03/11/2014 | Dissolved |
| HELIUS ENERGY LIMITED | 05745512 | 09/06/2006 | 03/11/2014 | Dissolved |
| SOUTHAMPTON BIOMASS POWER LIMITED | 07321900 | 21/07/2010 | 03/11/2014 | Dissolved |