| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Anchor Drilling Fluids Ltd | SC090461 | 01/05/2005 | Dissolved |
| Coral Engineering Ltd. | SC160611 | 19/07/2005 | Dissolved |
| Drill Cuttings Ltd | SC231180 | 01/05/2005 | Dissolved |
| Penrab Ltd | SC112745 | 01/05/2005 | Dissolved |
| RUBISLAW ASSOCIATES LTD | SC419817 | 19/03/2012 | Silver |
| Shutoff Solutions Ltd | 01945632 | 01/05/2005 | Dissolved |
| Swaco Ltd | 02112539 | 01/05/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BW GROUP UNLIMITED | SC159419 | 01/05/2005 | 01/06/2010 | Amber |
| BW GROUP UNLIMITED | SC159419 | 01/06/2010 | 01/07/2011 | Amber |
| CLEANCUT TECHNOLOGIES LIMITED | SC211751 | 01/05/2005 | 12/06/2009 | Dissolved |
| CLEANCUT TECHNOLOGIES LIMITED | SC211751 | 12/06/2009 | 01/07/2011 | Dissolved |
| CYCLOTECH UNLIMITED | 02887371 | 06/11/2009 | 01/07/2011 | Not Trading |
| M-I DRILLING FLUIDS U.K. UNLIMITED | SC161934 | 01/05/2005 | 12/06/2009 | Amber |
| M-I DRILLING FLUIDS U.K. UNLIMITED | SC161934 | 12/06/2009 | 01/07/2011 | Amber |
| M-I HOLDINGS (UK) UNLIMITED | SC235399 | 01/05/2005 | 12/06/2009 | One Red Flag |
| M-I HOLDINGS (UK) UNLIMITED | SC235399 | 12/06/2009 | 01/07/2011 | One Red Flag |
| M-I PRODUCTION CHEMICALS U.K. LIMITED | 02636695 | 01/05/2005 | 12/06/2009 | Dissolved |
| M-I PRODUCTION CHEMICALS U.K. LIMITED | 02636695 | 12/06/2009 | 28/05/2015 | Dissolved |
| M-I SWACO (UK) LIMITED | SC236479 | 01/05/2005 | 12/06/2009 | Dissolved |
| M-I SWACO (UK) LIMITED | SC236479 | 12/06/2009 | 01/07/2011 | Dissolved |
| SILKWATER HOLDINGS UNLIMITED | 05844753 | 06/11/2009 | 01/07/2011 | Not Trading |
| SONOTECH LIMITED | 03828326 | 06/11/2009 | 01/07/2011 | Dissolved |
| SPECIALISED PETROLEUM SERVICES GROUP UNLIMITED | SC204919 | 01/02/2007 | 01/07/2011 | Amber |
| SPECIALISED PETROLEUM SERVICES GROUP UNLIMITED | SC204919 | 03/08/2006 | 01/07/2011 | Amber |
| SPECIALISED PETROLEUM SERVICES INTERNATIONAL (BRANCH) LIMITED | 02661838 | 01/02/2007 | 01/07/2011 | Dissolved |
| SPECIALISED PETROLEUM SERVICES INTERNATIONAL (BRANCH) LIMITED | 02661838 | 03/08/2006 | 01/07/2011 | Dissolved |
| SPECIALISED PETROLEUM SERVICES INTERNATIONAL (HOLDINGS) LIMITED | SC195693 | 01/02/2007 | 01/07/2011 | Dissolved |
| SPECIALISED PETROLEUM SERVICES INTERNATIONAL (HOLDINGS) LIMITED | SC195693 | 03/08/2006 | 01/07/2011 | Dissolved |
| SPECIALISED PETROLEUM SERVICES INTERNATIONAL LIMITED | SC071516 | 03/08/2006 | 01/07/2011 | Dissolved |
| SPECIALISED PETROLEUM SERVICES INTERNATIONAL LIMITED | SC071516 | 03/08/2006 | 01/07/2011 | Dissolved |
| UNITED WIRE LIMITED | SC001878 | 07/08/2006 | 12/06/2009 | Dissolved |
| UNITED WIRE LIMITED | SC001878 | 12/06/2009 | 01/07/2011 | Dissolved |