| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ACADEMY MINERALS LIMITED | 08780588 | 19/11/2013 | Dissolved |
| API TECHNOLOGY (UK) LIMITED | 05712132 | 04/12/2008 | Dissolved |
| BUILT INTELLIGENCE LTD | 08323228 | 08/06/2015 | Silver |
| CADENCE MINERALS PLC | 05234262 | 31/07/2015 | Amber |
| HD SHELF TWO LIMITED | 10568368 | 17/01/2017 | Dissolved |
| IMMERSION TECHNOLOGY PROPERTY LIMITED | 06276806 | 30/06/2008 | Dissolved |
| RARE EARTH RESOURCES LIMITED | 08390571 | 01/05/2016 | Dissolved |
| REM MEXICO LIMITED | 08022329 | 01/05/2016 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BACANORA BATTERY METALS LIMITED | 10246575 | 22/06/2016 | 25/01/2017 | Dissolved |
| CC123 LIMITED | 05598125 | 05/03/2008 | 29/04/2011 | Dissolved |
| CONCHA LIMITED | 05382036 | 04/03/2005 | 29/04/2011 | Dissolved |
| HORSE HILL DEVELOPMENTS LTD | 08808553 | 12/06/2015 | 21/09/2015 | One Red Flag |
| LONRHO LIMITED | 02805337 | 28/09/2010 | 24/07/2013 | Not Trading |
| OPTIVA CRITICAL METALS LIMITED | 10682487 | 25/04/2018 | 26/08/2020 | Dissolved |
| SCIROCCO ENERGY LIMITED | 05542880 | 01/09/2005 | 26/03/2012 | Insolvent |
| TRAVELWELCOME LTD | 04563614 | 17/08/2015 | 13/10/2015 | Dissolved |
| UK OIL & GAS INVESTMENTS LIMITED | 11252712 | 13/03/2018 | 10/05/2023 | Silver |
| UK OIL & GAS PLC | 05299925 | 23/10/2015 | 16/09/2024 | Amber |
| UKOG (137/246) HOLDINGS LTD | 09010542 | 10/09/2019 | 10/05/2023 | Silver |
| UKOG (137/246) LTD | 06807023 | 10/09/2019 | 10/05/2023 | Amber |
| UKOG (GB) LIMITED | 04050227 | 25/01/2018 | 10/05/2023 | Gold |