| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Euroil Services Ltd | SC135961 | 31/01/1995 | Dissolved |
| FRANK'S HOWDEN LIMITED | SC110563 | 26/09/1989 | Insolvent |
| Gurtler,Hebert,& Co (Uk) Ltd | 02206741 | 31/03/1992 | Dissolved |
| Offshore Hammers Ltd | 02194636 | 31/03/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FRANK'S INTERNATIONAL LIMITED | 02015930 | 31/03/1992 | 01/07/2016 | One Red Flag |
| PARAMODE LIMITED | 02053297 | 31/03/2008 | 02/06/2010 | Dissolved |
| PARAMODE LIMITED | 02053297 | 31/03/2008 | 01/07/2016 | Dissolved |
| PILOT DRILLING CONTROL (ENGINEERING) LIMITED | 05425018 | 31/03/2008 | 01/10/2009 | Dissolved |
| PILOT DRILLING CONTROL LIMITED | 01838133 | 31/03/2008 | 08/07/2009 | Dissolved |
| PILOT DRILLING CONTROL LIMITED | 01838133 | 31/03/2008 | 01/07/2016 | Dissolved |