| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ANVAYA RENEWABLES LIMITED | 10967935 | 18/09/2017 | Bronze |
| BIOVEG OILS & FUELS INTERNATIONAL CORPORATION LTD | 15779905 | 15/06/2024 | Amber |
| CLEANWAY ENERGY DEVELOPMENT LIMITED | 10514692 | 07/12/2016 | Dissolved |
| CLIMATE CHANGE VENTURES LIMITED | 10425303 | 26/04/2018 | Amber |
| CONSAMOZ CONSULTING ASSOCIATES OF MOZAMBIQUE LIMITED | 10090719 | 31/03/2016 | Dissolved |
| ECO TERRA INVEST LTD | 08244072 | 08/10/2012 | One Red Flag |
| HL & HL ANTIQUITIES LIMITED | 07270802 | 15/06/2010 | Insolvent |
| HYDROGEN VENTURE CAPITAL LIMITED | 13234606 | 01/03/2021 | Strike Off |
| HYDROGEN VENTURES LTD | 13178825 | 30/01/2023 | One Red Flag |
| QUELON-GAS ENGINEERING AND TRADING LIMITED | 10260817 | 04/07/2016 | Dissolved |
| QUEST JFM INVESTMENTS LTD | 07323647 | 26/07/2010 | One Red Flag |
| QUEST PROPERTY ASSET MANAGEMENT (UCC) LTD | 12082866 | 07/01/2020 | Dissolved |
| QUEST PROPERTY ASSET MANAGEMENT LIMITED | 11679786 | 31/01/2019 | Amber |
| QUEST2ENERGY LIMITED | 09618353 | 02/06/2015 | One Red Flag |
| RESERO ADVANCED ECOFUEL LIMITED | 12394390 | 10/01/2020 | Gold |
| RESERO ENERGY LIMITED | 10379628 | 16/09/2016 | Dissolved |
| RESERO GAS LIMITED | 09618915 | 10/06/2015 | One Red Flag |
| RESERO POWER LIMITED | 09287069 | 20/02/2015 | Amber |
| SIX ENERGY LIMITED | 11270109 | 22/03/2018 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 1NKEMIA ADVANCED BF LTD | 10203592 | 09/01/2019 | 10/05/2021 | Dissolved |
| AVC TECHNICAL SERVICES LIMITED | 07491634 | 15/10/2015 | 23/05/2017 | Silver |
| G2B PHARMA LIMITED | 10877587 | 21/07/2017 | 29/11/2019 | Strike Off |
| HYDROGEN VENTURES LTD | 13178825 | 17/02/2021 | 07/07/2022 | One Red Flag |
| KAZ RESERO POWER (UK) LIMITED | 09545922 | 11/07/2019 | 18/02/2022 | Dissolved |
| STOR GENERATION LIMITED | 07510562 | 31/01/2011 | 11/11/2014 | Dissolved |