| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ASCENT CLAIM ENTITLEMENT SPV LTD | 15331521 | 06/12/2023 | Amber |
| ASCENT HISPANIC RESOURCES UK LIMITED | 11436071 | 13/04/2020 | Dissolved |
| CORO CLEAN ENERGY VIETNAM LIMITED | 13676018 | 24/06/2023 | One Red Flag |
| SOUND OIL LIMITED | 09714412 | 14/07/2016 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASCENT RESOURCES PLC | 05239285 | 05/03/2020 | 03/06/2024 | Amber |
| C4 ENERGY LTD | 11558414 | 07/09/2018 | 15/02/2023 | Silver |
| CORO ENERGY PLC | 10472005 | 12/12/2017 | 24/04/2024 | Amber |
| CORO EUROPE LIMITED | 05811564 | 30/11/2012 | 04/05/2018 | One Red Flag |
| ECHO ENERGY BOLIVIA (HOLD CO 1) UK LTD | 10760859 | 09/05/2017 | 01/09/2017 | Not Trading |
| ECHO ENERGY BOLIVIA (HOLD CO 2) UK LTD | 10762120 | 09/05/2017 | 01/09/2017 | Not Trading |
| ECHO ENERGY BOLIVIA (OP CO 1) UK LTD | 10761861 | 09/05/2017 | 01/09/2017 | Silver |
| ECHO ENERGY BOLIVIA (OP CO 2) UK LTD | 10763803 | 10/05/2017 | 01/09/2017 | Not Trading |
| ECHO ENERGY HOLDINGS (UK) LTD | 10756541 | 05/05/2017 | 01/09/2017 | Not Trading |
| NATIVO RESOURCES PLC | 05483127 | 09/03/2017 | 26/06/2024 | Amber |
| SOUND ENERGY MERIDJA LIMITED | 10171798 | 10/05/2016 | 16/04/2018 | Bronze |
| SOUND ENERGY MOROCCO EAST LIMITED | 09923108 | 18/12/2015 | 16/04/2018 | Bronze |
| SOUND ENERGY MOROCCO SOUTH LIMITED | 10015721 | 19/02/2016 | 16/04/2018 | Bronze |
| SOUND ENERGY NEW VENTURES LIMITED | 11839292 | 21/02/2019 | 07/01/2020 | Not Trading |
| SOUND ENERGY PLC | 05344804 | 10/10/2012 | 23/01/2020 | Silver |