| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BARRY ENERGY RECOVERY LIMITED | 06589595 | 08/12/2011 | Dissolved |
| BEDFORD ENERGY RECOVERY LIMITED | 06590251 | 08/12/2011 | Dissolved |
| BRADFORD ENERGY RECOVERY LIMITED | 06692641 | 08/12/2011 | Dissolved |
| DUDLEY ENERGY RECOVERY LIMITED | 06692661 | 08/12/2011 | Dissolved |
| ENERGOS LIMITED | 03109022 | 26/04/2010 | Dissolved |
| FLEETWOOD ENERGY RECOVERY LIMITED | 06589734 | 08/12/2011 | Dissolved |
| GLENMUCKLOCH MINERALS LIMITED | 08518434 | 16/01/2017 | Gold |
| GLENMUCKLOCH RESTORATION LIMITED | 08506886 | 16/01/2017 | Gold |
| GRANGEMOUTH ENERGY RECOVERY LIMITED | 08282914 | 13/12/2012 | Dissolved |
| LAGRAE BATTERY STORAGE LIMITED | SC762496 | 16/03/2023 | Bronze |
| NEWPORT ENERGY RECOVERY LIMITED | 06590541 | 08/12/2011 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BIOGEN POWER LIMITED | 05547534 | 08/12/2011 | 21/10/2016 | Dissolved |
| DONCASTER ENERGY RECOVERY LIMITED | 06636660 | 08/12/2011 | 21/10/2016 | Dissolved |
| GLENMUCKLOCH HOLDINGS LIMITED | SC690314 | 24/02/2021 | 30/09/2022 | Gold |
| GLENMUCKLOCH PUMPED STORAGE HYDRO LIMITED | SC522520 | 18/03/2019 | 30/09/2022 | Bronze |
| GLENMUCKLOCH RENEWABLE ENERGY LIMITED | SC474474 | 16/01/2017 | 30/09/2022 | Amber |
| HOPSRIG WIND FARM LIMITED | SC501771 | 16/01/2017 | 07/02/2019 | Silver |
| LISBURN ENERGY RECOVERY LIMITED | NI071660 | 08/12/2011 | 21/10/2016 | Dissolved |
| NLEI LTD | SC511747 | 20/04/2017 | 20/05/2019 | One Red Flag |
| WASTE GAS TECHNOLOGY UK LIMITED | 03051278 | 26/04/2010 | 16/01/2013 | Dissolved |