| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| KCA DEUTAG INTERNATIONAL LIMITED | FC038180 | 30/03/2021 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ENI ENERGY BONDCO LIMITED | 11294725 | 05/04/2018 | 07/01/2019 | Dissolved |
| ENI ENERGY CAPITAL LIMITED | 11136061 | 05/01/2018 | 07/01/2019 | Strike Off |
| ENI ENERGY FINANCE LIMITED | 11135991 | 05/01/2018 | 07/01/2019 | Bronze |
| ITHACA (NE) E&P LIMITED | 01483021 | 15/02/2018 | 07/01/2019 | Gold |
| ITHACA (NE) UKCS LIMITED | 03386464 | 15/02/2018 | 07/01/2019 | Amber |
| KCA DEUTAG ALPHA LIMITED | 06433748 | 07/01/2021 | 16/01/2025 | Bronze |
| NEO ENERGY (CNS) LIMITED | SC309081 | 25/09/2019 | 24/04/2020 | Bronze |
| NEO ENERGY (EXPLORATION) LIMITED | SC279866 | 25/09/2019 | 24/04/2020 | Bronze |
| NEO ENERGY (NORTH SEA) LIMITED | 08649342 | 25/09/2019 | 24/04/2020 | Dissolved |
| NEO ENERGY (PRODUCTION) LIMITED | 05896824 | 25/09/2019 | 24/04/2020 | Bronze |
| NEO ENERGY (SNS) LIMITED | SC291165 | 25/09/2019 | 24/04/2020 | One Red Flag |
| NEO ENERGY (UKCS) LIMITED | 02669936 | 25/09/2019 | 24/04/2020 | Amber |
| NEO ENERGY ENTERPRISES (NORTH SEA) LIMITED | 05073058 | 25/09/2019 | 24/04/2020 | Dissolved |
| NEO ENERGY ENTERPRISES LIMITED | 04388397 | 25/09/2019 | 24/04/2020 | Dissolved |
| NEO ENERGY EXPLORATION UK LIMITED | 08266502 | 25/09/2019 | 24/04/2020 | Bronze |
| NEO ENERGY HOLDING LIMITED | 12201991 | 11/09/2019 | 12/02/2020 | Silver |
| NEO ENERGY OIL & GAS LIMITED | 05400854 | 25/09/2019 | 24/04/2020 | Dissolved |