| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CLEANERGY TECHNOLOGY UK LIMITED | 09543556 | 15/04/2015 | Dissolved |
| EIDC LIMITED | 07104699 | 15/12/2009 | Dissolved |
| EMMERTON CONSULTING LIMITED | 05900435 | 09/08/2006 | Silver |
| EMMERTON CONSULTING LIMITED | 05900435 | 09/08/2006 | Silver |
| EMMERTON INTERNATIONAL DEVELOPMENTS LIMITED | 07170374 | 25/02/2010 | Dissolved |
| EVOLUTION AQUA GROUP LTD | 13909607 | 30/01/2024 | Bronze |
| HERZ BIOMASS UK LIMITED | 09871497 | 13/11/2015 | Dissolved |
| IN2CHANGE Ltd | SC186123 | 27/05/1998 | Dissolved |
| IN2CHANGE Ltd | SC186123 | 27/05/1998 | Dissolved |
| JOHNSONS AGGREGATES AND RECYCLING LIMITED | 04366658 | 29/07/2016 | Silver |
| LOPUS ENERGY LIMITED | 08636978 | 29/03/2016 | Dissolved |
| MYRIAD CEG GROUP LIMITED | 06969785 | 29/04/2015 | One Red Flag |
| MYRIAD CEG HOLDINGS LIMITED | 08791334 | 29/04/2015 | Dissolved |
| MYRIAD CEG LIMITED | 04391926 | 29/04/2015 | Dissolved |
| MYRIAD HEAT AND POWER PRODUCTS LTD | 07691864 | 20/07/2018 | Silver |
| ROOFTOP SOLAR SOLUTIONS LTD. | 07393366 | 30/09/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 2019 S&H LIMITED | 00650818 | 10/12/2001 | 31/01/2003 | Insolvent |
| AADSW MANAGEMENT LIMITED | 08010324 | 30/03/2012 | 09/05/2013 | Dissolved |
| AQUAMARINE POWER LIMITED | SC327622 | 01/06/2012 | 17/12/2015 | Dissolved |
| B&C2013 LIMITED | 06141723 | 31/03/2012 | 09/05/2013 | Dissolved |
| CATHCART (1993) LIMITED | 00733842 | 03/01/1996 | 08/07/2005 | Dissolved |
| CRITCHLEY ENGINEERING GROUP LIMITED | 13056936 | 02/05/2023 | 30/11/2023 | Silver |
| GREEN HIGHLAND RENEWABLES LTD | SC315779 | 05/10/2012 | 20/04/2015 | Gold |
| Power & Water Ltd | 01182454 | 03/01/1996 | 08/07/2005 | Dissolved |
| TWG YOUNG LIMITED | SC045285 | 03/01/1996 | 30/06/2005 | Not Trading |
| UNITED UTILITIES (OVERSEAS HOLDINGS) LIMITED | 02536732 | 14/06/2007 | 27/09/2007 | Not Trading |
| UNITED UTILITIES INTERNATIONAL LIMITED | 02344587 | 07/06/2007 | 27/09/2007 | Gold |
| UNITED UTILITIES PLC | 02366616 | 01/05/2007 | 27/09/2007 | Bronze |
| UNITED UTILITIES UTILITY SOLUTIONS LIMITED | 02268728 | 08/08/2007 | 27/09/2007 | Dissolved |
| VWS TECHNA LIMITED | SC244470 | 21/02/2003 | 01/12/2006 | Dissolved |
| VWS WESTGARTH LIMITED | SC147604 | 03/01/1996 | 01/12/2006 | Gold |
| WEIR HEAT EXCHANGE LIMITED | SC054471 | 03/01/1996 | 08/07/2005 | Dissolved |
| WEIR WATER TREATMENT LIMITED | 00168011 | 03/01/1996 | 08/07/2005 | Strike Off |