| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| M MAIN CONSULTANCY LIMITED | SC498864 | 25/02/2015 | Dissolved |
| Optima 2002 Ltd | SC231153 | 07/05/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Atlantic Power & Gas Engineering Ltd | 01296337 | 01/04/2001 | 31/07/2001 | Dissolved |
| BILFINGER INDUSTRIAL SERVICES UK HOLDING LIMITED | SC208934 | 31/05/2010 | 31/08/2012 | Dissolved |
| BILFINGER SALAMIS UK LIMITED | SC054207 | 01/12/2005 | 31/08/2012 | Silver |
| DEUTAG RESOURCE MANAGEMENT LIMITED | SC110503 | 23/05/1989 | 05/02/1991 | Dissolved |
| KVAERNER AMOD LIMITED | SC086985 | 23/02/1991 | 14/03/1996 | Dissolved |
| KVAERNER OIL & GAS LIMITED | 02147603 | 01/01/1999 | 20/11/1999 | Insolvent |
| O I E SERVICES LIMITED | 01418001 | 04/10/2001 | 31/03/2005 | Dissolved |
| OFFSHORE CONTRACTORS ASSOCIATION | SC170910 | 10/02/2009 | 13/11/2012 | Dissolved |
| PETROFAC FACILITIES MANAGEMENT LIMITED | SC075047 | 27/12/2000 | 31/07/2001 | One Red Flag |
| SORT 4 LIMITED | SC235261 | 01/12/2005 | 31/08/2012 | Dissolved |
| Searosa Ltd | 04244544 | 02/07/2001 | 04/04/2005 | Dissolved |