| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| EVERO ENERGY FINANCE LIMITED | 09641683 | 05/10/2015 | Bronze |
| EVERO ENERGY GROUP LIMITED | 09279808 | 05/10/2015 | Amber |
| HELIOS UK (NETHERLANDS) LTD | 12328100 | 22/11/2019 | Silver |
| HELIOS UK (POLAND) LTD | 12376747 | 23/12/2019 | Strike Off |
| HELIOS UK (SPAIN) LTD | 11978044 | 03/05/2019 | Strike Off |
| HELIOS UK HOLDCO LTD | 11737127 | 20/12/2018 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALTERNATIVE ENERGY DEVELOPMENTS PLC | 07139425 | 14/11/2014 | 15/06/2017 | One Red Flag |
| BARKIP BIOGAS HOLDING LIMITED | 12009723 | 21/05/2019 | 03/12/2020 | Silver |
| BARKIP BIOGAS LTD | 12015760 | 24/05/2019 | 03/12/2020 | Silver |
| BIG LEGOLAS HOLDINGS LIMITED | 10471247 | 09/11/2016 | 07/09/2018 | Bronze |
| EARNSIDE ENERGY HOLDINGS LTD | 11491609 | 31/07/2018 | 19/08/2020 | One Red Flag |
| EARNSIDE ENERGY LIMITED | 07251939 | 11/04/2019 | 19/08/2020 | Amber |
| EAST LONDON BIOGAS LIMITED | 07625177 | 17/07/2019 | 01/08/2022 | Amber |
| EAST LONDON BIOGAS OPCO LIMITED | 09310402 | 17/07/2019 | 01/08/2022 | Dissolved |
| EMERALD HOLDCO LIMITED | 12253606 | 10/10/2019 | 07/07/2021 | Bronze |
| ENERGEN BIOGAS HOLDCO LTD | 11491564 | 31/07/2018 | 19/08/2020 | Amber |
| ENERGEN BIOGAS LIMITED | SC338426 | 30/08/2018 | 19/08/2020 | Silver |
| EVERO ENERGY HOLDINGS LIMITED | 09642938 | 05/10/2015 | 07/09/2018 | Bronze |
| GECO HOLDCO LTD | NI660472 | 14/05/2019 | 27/01/2021 | Silver |
| GRANVILLE ECOPARK HOLDING COMPANY LIMITED | NI609709 | 14/05/2019 | 27/01/2021 | Dissolved |
| GRANVILLE ECOPARK LIMITED | NI061353 | 14/05/2019 | 27/01/2021 | Silver |
| GRANVILLE ENERGY SUPPLY LIMITED | NI635587 | 14/05/2019 | 27/01/2021 | Amber |
| PARAGON EFFICIENCIES LIMITED | SC354580 | 30/08/2018 | 19/08/2020 | Dissolved |
| WHITCHURCH AD LIMITED | 09398578 | 17/07/2019 | 01/08/2022 | Silver |