| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Burren Energy (652A) Ltd | 05860422 | 19/07/2006 | Dissolved |
| CARDINAL HUME CENTRE | 04333875 | 10/12/2015 | Silver |
| Eaton Grange Furniture Ltd | 01522281 | 30/03/1991 | Dissolved |
| Icarus Investments Ltd | 01543579 | 30/03/1991 | Dissolved |
| LATINCO LIMITED | 06450222 | 10/04/2017 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BAYFIELD ENERGY LIMITED | 06395419 | 10/10/2007 | 28/01/2008 | One Red Flag |
| BURREN ENERGY (EGYPT) LIMITED | 04948245 | 07/01/2004 | 01/02/2008 | One Red Flag |
| BURREN ENERGY (SERVICES) LIMITED | 03060511 | 01/09/2004 | 01/02/2008 | Dissolved |
| BURREN ENERGY INDIA LIMITED | 05319270 | 11/02/2005 | 01/02/2008 | Gold |
| BURREN ENERGY PLC | 03492720 | 02/07/2001 | 01/02/2008 | Gold |
| Burren Energy (Oman) Ltd | 05650588 | 09/12/2005 | 01/02/2008 | Dissolved |
| Burren Energy Drilling Services Ltd | 05588666 | 11/10/2005 | 01/02/2008 | Dissolved |
| Burren Energy New Ventures Ltd | 05890173 | 28/07/2006 | 01/02/2008 | Dissolved |
| EMBERCOMBE | 05943952 | 04/12/2015 | 24/10/2017 | One Red Flag |
| ENI YEMEN LIMITED | 05567365 | 19/09/2005 | 01/02/2008 | Gold |
| GULFSANDS PETROLEUM PLC | 05302880 | 01/06/2008 | 30/04/2012 | Amber |
| ROMANGATE LIMITED | 06755734 | 21/01/2009 | 21/01/2010 | Gold |
| Societe Generale European Emerging Markets Ltd | 03106428 | 29/12/1997 | 19/01/1999 | Dissolved |