| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Energytastic Ltd | 04120225 | 29/01/2001 | Dissolved |
| Kvaerner Frontier Ltd. | 02887933 | 27/04/1994 | Dissolved |
| Kvaerner O.P. Ltd | SC159765 | 29/09/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| GEOACOUSTICS LTD | 02571389 | 03/01/1992 | 11/03/1997 | Silver |
| HELISWIRL PETROCHEMICALS HOLDINGS LIMITED | 06549630 | 23/06/2008 | 10/10/2011 | Dissolved |
| HELISWIRL PETROCHEMICALS LIMITED | 06549638 | 14/05/2008 | 10/10/2011 | Dissolved |
| HELISWIRL TECHNOLOGIES LIMITED | 05032418 | 12/11/2007 | 15/11/2011 | Dissolved |
| Kvaerner H&g Offshore Ltd | 02594507 | 07/09/1993 | 29/03/1997 | Dissolved |
| Kvaerner National Ltd | SC146498 | 15/12/1993 | 14/12/2000 | Dissolved |
| Kvaerner Oil & Gas Services Ltd | 01860833 | 01/03/1996 | 30/06/2000 | Dissolved |
| Kvaerner Oilfield Products Group Ltd | 02235611 | 27/12/1991 | 14/12/2000 | Dissolved |
| Kvaerner Oilfield Products Ltd | SC063277 | 06/12/1988 | 23/12/1992 | Dissolved |
| Magnus Power Ltd | 01948486 | 28/02/1992 | 14/12/2000 | Dissolved |
| Mandeville Engineering Ltd | 02470837 | 16/02/1993 | 14/12/2000 | Dissolved |
| PELAMIS WAVE POWER LIMITED | SC182368 | 18/03/2002 | 07/06/2011 | Dissolved |