| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Mmands (4010) Ltd | SC273686 | 25/11/2004 | Dissolved |
| SELGOVIA LIMITED | SC264904 | 15/03/2004 | Gold |
| SELGOVIA LIMITED | SC264904 | 15/03/2004 | Gold |
| VANTICA RESOURCES LIMITED | SC442795 | 14/02/2013 | Dissolved |
| WELL DECOM LIMITED | SC531585 | 04/04/2016 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DART ENERGY (CARBON STORAGE) LIMITED | SC323199 | 03/07/2007 | 01/10/2009 | Dissolved |
| DART ENERGY (EAST ENGLAND) LIMITED | 06760546 | 03/03/2009 | 01/10/2009 | One Red Flag |
| DART ENERGY (EUROPE) LIMITED | SC259898 | 27/07/2004 | 01/10/2009 | Gold |
| DART ENERGY (LOTHIAN) LIMITED | SC328864 | 03/10/2007 | 01/10/2009 | Dissolved |
| DART ENERGY (WEST ENGLAND) LIMITED | 06760557 | 03/03/2009 | 01/10/2009 | Amber |
| IGAS ENERGY PRODUCTION LIMITED | SC298739 | 13/04/2006 | 01/10/2009 | Bronze |
| RIGDOWN LIMITED | SC298738 | 13/04/2006 | 01/12/2009 | Dissolved |
| XODUS SUBSURFACE LIMITED | SC374624 | 01/07/2010 | 06/12/2011 | Dissolved |