| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| DARNHOLM LIMITED | SC449452 | 08/05/2013 | Dissolved |
| TECHNICAL LIMIT SERVICES LIMITED | SC218133 | 30/04/2009 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABBOT GROUP LIMITED | 00623285 | 01/01/2009 | 09/07/2012 | Bronze |
| ABBOT HOLDINGS LIMITED | 02682916 | 18/01/2010 | 05/07/2012 | Bronze |
| ABBOT INVESTMENTS (NORTH AFRICA) LIMITED | 05246036 | 22/10/2009 | 09/07/2012 | One Red Flag |
| ALBYN DRILLING SERVICES LIMITED | SC118702 | 30/04/2008 | 09/07/2012 | Dissolved |
| DEUTAG LIMITED | 02161895 | 30/04/2009 | 09/07/2012 | Dissolved |
| DEUTAG RESOURCE MANAGEMENT LIMITED | SC110503 | 30/04/2009 | 09/07/2012 | Dissolved |
| DEUTAG UK LIMITED | 02279453 | 30/04/2009 | 09/07/2012 | Dissolved |
| GALLOWAY (HOLDINGS) LIMITED | 06569223 | 29/03/2013 | 10/12/2013 | Dissolved |
| KCA DEUTAG (LAND RIG) LIMITED | 05659113 | 24/05/2011 | 09/07/2012 | One Red Flag |
| KCA DEUTAG CASPIAN LIMITED | 01877963 | 22/01/1998 | 09/07/2012 | Amber |
| KCA DEUTAG DRILLING GROUP LIMITED | 01059871 | 23/10/2001 | 09/07/2012 | One Red Flag |
| KCA DEUTAG DRILLING LIMITED | SC031961 | 09/09/1996 | 09/07/2012 | Silver |
| KCA DEUTAG DRILLING SERVICES (UK) LIMITED | SC234542 | 01/08/2005 | 09/07/2012 | Insolvent |
| KCA DEUTAG EUROPE B.V. | SF000965 | 31/01/2006 | 09/07/2012 | Bronze |
| KCA DEUTAG LIMITED | SC349488 | 03/10/2008 | 05/07/2012 | One Red Flag |
| KCA DEUTAG TECHNICAL SUPPORT LIMITED | SC219425 | 11/09/2001 | 05/07/2012 | Amber |
| KCA DRILLING UK LIMITED | SC125584 | 21/11/1996 | 09/07/2012 | Dissolved |
| KCA EUROPE LIMITED | 01189464 | 30/04/2009 | 09/07/2012 | Dissolved |
| KCA EUROPEAN HOLDINGS LIMITED | 04286946 | 30/04/2009 | 05/07/2012 | Silver |
| RDS ENERGY SOLUTIONS LIMITED | 02479484 | 18/01/2010 | 09/07/2012 | Amber |
| RIG DESIGN SERVICES HOLDINGS LIMITED | 04286931 | 18/01/2010 | 09/07/2012 | Amber |
| SET DRILLING COMPANY LIMITED | SC167498 | 30/04/2009 | 09/07/2012 | One Red Flag |
| THE UK OFFSHORE ENERGIES ASSOCIATION LIMITED | 01119804 | 19/04/2007 | 28/07/2010 | Bronze |