| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| COBALT ENERGY HOLDINGS LIMITED | 13471340 | 22/06/2021 | Bronze |
| COBALT ENERGY LIMITED | 06901676 | 11/05/2009 | Silver |
| COBALT ENERGY OPERATIONAL SERVICES LIMITED | 13577338 | 20/08/2021 | Bronze |
| COBALT ENERGY PROJECT SERVICES LIMITED | 13579911 | 23/08/2021 | One Red Flag |
| IAN CRUMMACK ASSOCIATES LIMITED | 04430119 | 02/05/2002 | Silver |
| MALVERN OPERATIONS LIMITED | 11828782 | 15/02/2019 | One Red Flag |
| NORTH MIDLANDS OPERATIONS LIMITED | 04047785 | 04/08/2000 | One Red Flag |
| STOKE OPERATIONS LIMITED | 12363860 | 16/12/2019 | One Red Flag |
| WELLAND OPERATIONS LIMITED | 10524720 | 14/12/2016 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| NEWLINCS DEVELOPMENT LIMITED | 03764102 | 05/05/1999 | 17/04/2009 | Gold |
| ORSTED SP HOLDING (UK) LIMITED | 06454112 | 06/03/2009 | 17/05/2011 | Gold |
| PAPREC ENERGIES CYCLERVAL LIMITED | 03277413 | 22/09/1999 | 17/04/2009 | Gold |
| PAPREC ENERGIES GRIMSBY OPERATIONS LIMITED | 03860330 | 22/11/1999 | 17/04/2009 | Gold |
| SEVERN GAS TRANSPORTATION LIMITED | 05121224 | 06/03/2009 | 17/05/2011 | One Red Flag |
| SEVERN POWER FUNDING LIMITED | 06537284 | 06/03/2009 | 17/05/2011 | Dissolved |
| SEVERN POWER LIMITED | 05392552 | 06/03/2009 | 17/05/2011 | Bronze |