| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CULTURAL EXCHANGE (ABERDEEN) LIMITED | SC282101 | 30/03/2005 | Dissolved |
| Lighthouse Business Development Ltd. | SC250093 | 26/07/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABBOT GROUP LIMITED | 00623285 | 01/01/2009 | 21/01/2013 | Bronze |
| ABBOT HOLDINGS LIMITED | 02682916 | 05/07/2012 | 21/01/2013 | Silver |
| ABBOT INVESTMENTS (NORTH AFRICA) LIMITED | 05246036 | 22/10/2009 | 21/01/2013 | One Red Flag |
| ALBYN DRILLING SERVICES LIMITED | SC118702 | 09/07/2012 | 21/01/2013 | Dissolved |
| DEUTAG LIMITED | 02161895 | 09/07/2012 | 21/01/2013 | Dissolved |
| DEUTAG RESOURCE MANAGEMENT LIMITED | SC110503 | 09/07/2012 | 21/01/2013 | Dissolved |
| DEUTAG UK LIMITED | 02279453 | 09/07/2012 | 21/01/2013 | Dissolved |
| KCA DEUTAG (LAND RIG) LIMITED | 05659113 | 09/07/2012 | 21/01/2013 | One Red Flag |
| KCA DEUTAG CASPIAN LIMITED | 01877963 | 30/04/2009 | 21/01/2013 | Silver |
| KCA DEUTAG DRILLING GROUP LIMITED | 01059871 | 18/06/2003 | 02/08/2004 | Bronze |
| KCA DEUTAG DRILLING LIMITED | SC031961 | 30/04/2009 | 21/01/2013 | Gold |
| KCA DEUTAG DRILLING RIGS I LIMITED | SC426092 | 13/06/2012 | 21/01/2013 | Dissolved |
| KCA DEUTAG DRILLING SERVICES (UK) LIMITED | SC234542 | 09/07/2012 | 21/01/2013 | Insolvent |
| KCA DEUTAG ENTERPRISES LIMITED | 06715023 | 03/10/2008 | 21/01/2013 | One Red Flag |
| KCA DEUTAG FINANCE I LIMITED | SC423214 | 02/05/2012 | 21/01/2013 | Dissolved |
| KCA DEUTAG FINANCE II LIMITED | SC425933 | 11/06/2012 | 21/01/2013 | Dissolved |
| KCA DEUTAG LIMITED | SC349488 | 05/07/2012 | 21/01/2013 | One Red Flag |
| KCA DEUTAG RIG DESIGN SERVICES LIMITED | SC421351 | 05/04/2012 | 21/01/2013 | Silver |
| KCA DEUTAG TECHNICAL SUPPORT LIMITED | SC219425 | 05/07/2012 | 21/01/2013 | Amber |
| KCA DRILLING UK LIMITED | SC125584 | 09/07/2012 | 21/01/2013 | Dissolved |
| KCA EUROPE LIMITED | 01189464 | 09/07/2012 | 21/01/2013 | Dissolved |
| KCA EUROPEAN HOLDINGS LIMITED | 04286946 | 05/07/2012 | 21/01/2013 | Silver |
| RDS ENERGY SOLUTIONS LIMITED | 02479484 | 09/07/2012 | 21/01/2013 | Silver |
| RIG DESIGN SERVICES HOLDINGS LIMITED | 04286931 | 09/07/2012 | 21/01/2013 | Silver |
| SANDPIPER DRILLING LIMITED | 01345950 | 09/07/2012 | 21/01/2013 | Dissolved |
| SET DRILLING COMPANY LIMITED | SC167498 | 09/07/2012 | 21/01/2013 | One Red Flag |
| TRANSITION EXTREME SPORTS LIMITED | SC280405 | 22/02/2005 | 14/03/2008 | Bronze |
| TRANSITION EXTREME SPORTS LIMITED | SC280405 | 22/02/2005 | 06/03/2012 | Bronze |