| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| GEOLOGICAL TRADING LIMITED | 03522033 | 23/04/2009 | Bronze |
| Petroleum Geology '86 Ltd | 01902449 | 25/02/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CENTRICA F3 DEVELOPMENTS LIMITED | SC330389 | 08/02/2010 | 31/12/2012 | Dissolved |
| CENTRICA INFRASTRUCTURE LIMITED | SC308384 | 08/02/2010 | 01/01/2014 | Dissolved |
| CENTRICA NORTH SEA GAS EXPLORATION LIMITED | 04713887 | 08/02/2010 | 31/12/2012 | Dissolved |
| CENTRICA PRODUCTION (DMF) LIMITED | 01483729 | 08/02/2010 | 31/12/2012 | Dissolved |
| CENTRICA PRODUCTION (GMA) LIMITED | 04480539 | 08/02/2010 | 31/12/2012 | Dissolved |
| CENTRICA PRODUCTION LIMITED | SC169182 | 23/11/2011 | 21/10/2013 | Not Trading |
| CENTRICA TRADING LIMITED | 04440303 | 08/02/2010 | 31/12/2012 | Insolvent |
| CENTRICA UPSTREAM INVESTMENT LIMITED | SC314144 | 08/02/2010 | 31/10/2014 | Dissolved |
| CH4 OLD LIMITED | 04843182 | 08/02/2010 | 03/09/2012 | Dissolved |
| CIU1 LIMITED | 04487600 | 08/02/2010 | 21/10/2013 | Dissolved |
| GESGB | 04128009 | 14/12/2000 | 08/01/2002 | Silver |
| GESGB CONFERENCES LIMITED | 02649148 | 26/09/1992 | 15/06/1993 | Bronze |
| ITHACA SP FINANCE LIMITED | 09102885 | 18/11/2014 | 30/06/2022 | Amber |
| ITHACA SP O&G LIMITED | 09858988 | 05/11/2015 | 30/06/2022 | Amber |
| ITHACA SPE LIMITED | 09103084 | 18/11/2014 | 30/06/2022 | Gold |
| PETROLEUM GEOLOGY CONFERENCES LIMITED | 03836484 | 28/02/2000 | 17/04/2002 | Dissolved |
| RAMBOLL OIL & GAS UK LIMITED | SC245357 | 22/10/2003 | 01/10/2004 | Dissolved |
| SPIRIT ENERGY NORTH SEA LIMITED | 04594558 | 08/02/2010 | 31/10/2014 | Silver |
| SPIRIT ENERGY NORTH SEA OIL LIMITED | SC210361 | 08/02/2010 | 01/01/2014 | Bronze |
| SPIRIT ENERGY PRODUCTION UK LIMITED | 03115179 | 16/04/2012 | 01/01/2014 | Gold |
| SPIRIT ENERGY RESOURCES LIMITED | 02855151 | 08/02/2010 | 01/01/2014 | Silver |
| SPIRIT NORTH SEA GAS LIMITED | SC182822 | 08/02/2010 | 01/01/2014 | Silver |
| SPIRIT NORWAY LIMITED | 05747539 | 16/04/2012 | 01/01/2014 | N/A |
| SPIRIT PRODUCTION (SERVICES) LIMITED | SC305856 | 16/04/2012 | 01/01/2014 | Bronze |
| SPIRIT RESOURCES (ARMADA) LIMITED | 04181384 | 08/02/2010 | 31/10/2014 | Gold |
| VIENCO GROUP LIMITED | SC233773 | 01/07/2003 | 01/10/2004 | Dissolved |
| Vienco Hydrocarbons Ltd | SC253703 | 01/08/2003 | 01/10/2004 | Dissolved |
| Vienco Operations Ltd | SC253702 | 01/08/2003 | 01/10/2004 | Dissolved |