| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ASTRA ENERGY CONSULT LIMITED | 13242956 | 03/03/2021 | Dissolved |
| ASTRAL CONSULT LTD | 15532551 | 29/02/2024 | Amber |
| BLACKBUCK ENERGY LTD | 11371426 | 18/05/2018 | Dissolved |
| NOSTRUM OIL & GAS PLC | 08717287 | 14/02/2023 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DART ENERGY (EAST ENGLAND) LIMITED | 06760546 | 15/09/2022 | 04/06/2024 | One Red Flag |
| DART ENERGY (EUROPE) LIMITED | SC259898 | 15/09/2022 | 04/06/2024 | Gold |
| DART ENERGY (WEST ENGLAND) LIMITED | 06760557 | 15/09/2022 | 04/06/2024 | Amber |
| ENWELL ENERGY PLC | 04462555 | 20/09/2017 | 07/03/2024 | Silver |
| GREENPARK ENERGY TRANSPORTATION LIMITED | 06977962 | 14/09/2022 | 04/06/2024 | Not Trading |
| GT ENERGY CROATIA LIMITED | 15019171 | 21/07/2023 | 04/06/2024 | Bronze |
| GT ENERGY UK LIMITED | 08451346 | 15/09/2022 | 04/06/2024 | One Red Flag |
| IGAS ENERGY DEVELOPMENT LIMITED | 07240286 | 15/09/2022 | 04/06/2024 | Bronze |
| IGAS ENERGY ENTERPRISE LIMITED | 05457589 | 15/09/2022 | 04/06/2024 | Bronze |
| IGAS ENERGY LIMITED | 05054503 | 15/09/2022 | 04/06/2024 | Gold |
| IGAS ENERGY PRODUCTION LIMITED | SC298739 | 15/09/2022 | 04/06/2024 | Bronze |
| ISLAND GAS (SINGLETON) LIMITED | 01021095 | 15/09/2022 | 04/06/2024 | Gold |
| ISLAND GAS LIMITED | 04962079 | 15/09/2022 | 04/06/2024 | Bronze |
| ISLAND GAS OPERATIONS LIMITED | 03999194 | 15/09/2022 | 04/06/2024 | Not Trading |
| STAR ENERGY GROUP PLC | 04981279 | 10/01/2022 | 04/06/2024 | Amber |
| STAR ENERGY LIMITED | 03806814 | 15/09/2022 | 04/06/2024 | Amber |
| STAR ENERGY WEALD BASIN LIMITED | 06293763 | 15/09/2022 | 04/06/2024 | One Red Flag |