| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALEPH ENERGY LTD | 13029521 | 10/12/2020 | One Red Flag |
| ALEPH SALTFLEETBY LTD | 13241147 | 03/03/2021 | Bronze |
| ANTLER GLOBAL LIMITED | 12192744 | 20/12/2023 | One Red Flag |
| EUROPA OIL & GAS (HOLDINGS) PLC | 05217946 | 01/06/2022 | Silver |
| EUROPA OIL & GAS (INISHKEA) LIMITED | 11365352 | 04/10/2022 | Amber |
| EUROPA OIL & GAS (IRELAND EAST) LIMITED | 08715890 | 04/10/2022 | Bronze |
| EUROPA OIL & GAS (IRELAND WEST) LIMITED | 08716659 | 04/10/2022 | Bronze |
| EUROPA OIL & GAS (NEW VENTURES) LIMITED | 07259142 | 04/10/2022 | Amber |
| EUROPA OIL & GAS (UK) LIMITED | 09131600 | 04/10/2022 | Not Trading |
| EUROPA OIL & GAS (WEST FIRSBY) LIMITED | 04712020 | 04/10/2022 | Not Trading |
| EUROPA OIL & GAS LIMITED | 03093716 | 04/10/2022 | Bronze |
| GRAFTON ENERGY ADVISORS LTD | 11420952 | 18/06/2018 | Dissolved |
| GRAFTON ENERGY LTD | 13391160 | 12/05/2021 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ECHO ENERGY ARGENTINA HOLDINGS LIMITED | 11023721 | 20/10/2017 | 01/08/2018 | Not Trading |
| ECHO ENERGY BOLIVIA (HOLD CO 1) UK LTD | 10760859 | 01/09/2017 | 01/08/2018 | Not Trading |
| ECHO ENERGY BOLIVIA (HOLD CO 2) UK LTD | 10762120 | 01/09/2017 | 01/08/2018 | Not Trading |
| ECHO ENERGY BOLIVIA (OP CO 1) UK LTD | 10761861 | 01/09/2017 | 01/08/2018 | Silver |
| ECHO ENERGY BOLIVIA (OP CO 2) UK LTD | 10763803 | 01/09/2017 | 01/08/2018 | Not Trading |
| ECHO ENERGY C D AND LLC LTD | 11029613 | 24/10/2017 | 01/08/2018 | Not Trading |
| ECHO ENERGY HOLDINGS (UK) LTD | 10756541 | 01/09/2017 | 01/08/2018 | Not Trading |
| ECHO ENERGY TAPI AIKE LTD | 11029574 | 24/10/2017 | 01/08/2018 | Not Trading |
| ECO ENERGY CDL OP LTD | 11031406 | 25/10/2017 | 01/08/2018 | Silver |
| ECO ENERGY TA OP LTD | 11031381 | 25/10/2017 | 01/08/2018 | Silver |
| INDEPENDENT RESOURCES (KSAR HADADA) LIMITED | 05509934 | 01/09/2017 | 01/08/2018 | Dissolved |
| INDEPENDENT RESOURCES (SAHARA) LIMITED | 09822830 | 01/09/2017 | 01/08/2018 | Dissolved |
| INDEPENDENT RESOURCES (TUNISIA) LIMITED | 09865825 | 01/09/2017 | 01/08/2018 | Dissolved |
| TETHYS OIL SERVICES U.K. LIMITED | 12036248 | 06/06/2019 | 30/06/2020 | Insolvent |