| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AVALONIA ABBEYDALE LIMITED | 11648577 | 11/11/2022 | Dissolved |
| AVALONIA ENERGY APPRAISAL LIMITED | 11999602 | 11/11/2022 | Dissolved |
| AVALONIA ENERGY LIMITED | 11475497 | 11/11/2022 | Dissolved |
| AVALONIA GODDARD LIMITED | 11586152 | 11/11/2022 | Dissolved |
| IOG PLC | 07434350 | 11/11/2022 | Insolvent |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CALENERGY INFRASTRUCTURE LIMITED | 07632910 | 11/11/2022 | 30/08/2024 | One Red Flag |
| CALENERGY NORTH SEA LIMITED | 07632999 | 11/11/2022 | 30/08/2024 | One Red Flag |
| CALENERGY SNS LIMITED | 08619688 | 11/11/2022 | 30/08/2024 | One Red Flag |
| INEOS 120 ENERGY LIMITED | 06559929 | 11/09/2020 | 01/11/2021 | Dissolved |
| INEOS 120 EXPLORATION LIMITED | 06714831 | 11/09/2020 | 01/11/2021 | Not Trading |
| INEOS 120 POWER LIMITED | 06714835 | 11/09/2020 | 01/11/2021 | Dissolved |
| INEOS CLIPPER SOUTH B LIMITED | 04649606 | 09/05/2016 | 01/11/2021 | Bronze |
| INEOS CLIPPER SOUTH C LIMITED | 04967270 | 09/05/2016 | 01/11/2021 | Bronze |
| INEOS E&P (SIRI) UK LIMITED | 02650006 | 26/03/2021 | 01/11/2021 | N/A |
| INEOS E&P (UK) LIMITED | 04376184 | 26/01/2018 | 01/11/2021 | Silver |
| INEOS E&P SERVICES (UK) LIMITED | 07227427 | 30/07/2020 | 01/11/2021 | Dissolved |
| INEOS OFFSHORE BCS LIMITED | 09687203 | 06/05/2016 | 01/11/2021 | One Red Flag |
| INEOS UK E&P HOLDINGS LIMITED | SC200459 | 09/05/2016 | 01/11/2021 | Bronze |
| INEOS UK SNS LIMITED | 01021338 | 09/05/2016 | 01/11/2021 | Silver |
| INEOS UPSTREAM HOLDINGS LIMITED | 10645161 | 09/09/2020 | 03/11/2021 | Bronze |
| INEOS UPSTREAM LIMITED | 09121775 | 11/09/2020 | 01/11/2021 | Amber |
| INEOS UPSTREAM SERVICES LIMITED | 09485976 | 11/09/2020 | 01/11/2021 | One Red Flag |