| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Ecast Ltd | 03851083 | 06/10/1999 | Dissolved |
| LAURASIA ENERGY LIMITED | 10225906 | 29/12/2016 | Bronze |
| SCYTHIAN OIL LTD | 08792379 | 20/06/2017 | Bronze |
| TENDE ENERGY PLC | 05181462 | 18/12/2017 | One Red Flag |
| THC CONSULTING LIMITED | 06577753 | 28/04/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AFREN PLC | 05304498 | 26/06/2009 | 25/06/2015 | Dissolved |
| EAST IMPERIAL PLC | 10973102 | 17/04/2018 | 01/09/2023 | Insolvent |
| RED LEOPARD HOLDINGS PLC | 05289187 | 20/03/2017 | 26/02/2024 | One Red Flag |
| SEVERFIELD PLC | 01721262 | 30/05/2008 | 18/07/2014 | Gold |
| TENDE ENERGY PLC | 05181462 | 19/08/2008 | 25/09/2013 | One Red Flag |