| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| OGL GEOTHERMAL LIMITED | 13799072 | 14/12/2021 | Amber |
| WHEATON ENERGY LIMITED | 15577489 | 19/03/2024 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| HARBOUR ENERGY CENTRAL ANDAMAN LIMITED | 08534717 | 09/11/2021 | 29/09/2023 | Not Trading |
| NAVITAS PETROLEUM DEVELOPMENT AND PRODUCTION LTD | 08138246 | 20/07/2021 | 22/09/2022 | Amber |
| PREMIER OIL ABERDEEN SERVICES LIMITED | 01164961 | 20/05/2015 | 01/07/2018 | Amber |
| PREMIER OIL ANDAMAN I LIMITED | 07447540 | 09/11/2021 | 29/09/2023 | Bronze |
| PREMIER OIL ANDAMAN LIMITED | 08534721 | 09/11/2021 | 29/09/2023 | Amber |
| PREMIER OIL BARAKUDA LIMITED | 05052042 | 09/11/2021 | 29/09/2023 | Silver |
| PREMIER OIL E&P UK ENERGY TRADING LIMITED | 04103928 | 25/11/2016 | 01/07/2018 | Dissolved |
| PREMIER OIL E&P UK EU LIMITED | 02907493 | 25/11/2016 | 01/07/2018 | Amber |
| PREMIER OIL E&P UK LIMITED | 02761032 | 25/11/2016 | 01/07/2018 | Gold |
| PREMIER OIL GROUP HOLDINGS LIMITED | 10785965 | 09/11/2021 | 29/09/2023 | Silver |
| PREMIER OIL GROUP LIMITED | SC017829 | 09/11/2021 | 29/09/2023 | Gold |
| PREMIER OIL HOLDINGS LIMITED | 03689620 | 09/11/2021 | 29/09/2023 | Amber |
| PREMIER OIL MEXICO HOLDINGS LIMITED | 08033702 | 09/11/2021 | 29/09/2023 | Amber |
| PREMIER OIL MEXICO INVESTMENTS LIMITED | 08279035 | 09/11/2021 | 29/09/2023 | One Red Flag |
| PREMIER OIL SOUTH ANDAMAN LIMITED | 01474678 | 09/11/2021 | 29/09/2023 | Bronze |
| PREMIER OIL UK LIMITED | SC048705 | 20/05/2015 | 01/07/2018 | Amber |