| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Aqus Consultancy Limited | 02428468 | 04/07/1991 | Dissolved |
| Aqus Consultancy Limited | 02428468 | 04/07/1991 | Dissolved |
| Aqus Ltd | 02402062 | 07/07/1991 | Dissolved |
| Aqus Ltd | 02402062 | 07/07/1991 | Dissolved |
| Aqus Ltd | 03262637 | 11/10/1996 | Dissolved |
| Bja - Mentor Production Systems Limited | 02280478 | 31/05/1991 | Dissolved |
| Bja - Mentor Production Systems Limited | 02280478 | 31/05/1991 | Dissolved |
| Brownfield Energy Ltd | 05320278 | 23/12/2004 | Dissolved |
| Echo (Grampian) Ltd | SC116535 | 07/08/1992 | Dissolved |
| Euroseas Engineering Solutions & Testing Ltd | 03747696 | 01/06/1999 | Dissolved |
| Frances Mary Passenger Boat Co Ltd | 03441732 | 29/09/1997 | Dissolved |
| Frances Mary Passenger Boat Co Ltd | 03441732 | 29/09/1997 | Dissolved |
| Ipsa Power Ltd | 03459840 | 09/01/2007 | Dissolved |
| NEI INVESTMENTS LIMITED | 07166705 | 09/06/2010 | Dissolved |
| ONCOPROBE LIMITED | 03733856 | 07/04/2008 | Dissolved |
| The Northern Energy Initiative | 03207357 | 09/01/2007 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Aker Oil & Gas Ltd | 02576810 | 01/07/1996 | 31/08/1996 | Dissolved |
| BUCHAN COMBINED HEAT & POWER LTD | 06128843 | 31/01/2008 | 09/06/2010 | Dissolved |
| CAPCIS LIMITED | 02291712 | 18/10/1995 | 09/01/2007 | Dissolved |
| Capcis Systems Ltd | 04246523 | 30/11/2001 | 31/07/2003 | Dissolved |
| ENERGYN LIMITED | 01529602 | 03/03/2003 | 31/03/2003 | Dissolved |
| FUTURE TRANSPORT SYSTEMS LTD | 06936809 | 17/06/2009 | 08/04/2010 | Amber |
| GLOBAL UNDERWATER HUB LIMITED | SC266233 | 01/08/2004 | 01/10/2009 | One Red Flag |
| GRANHERNE LIMITED | 01498189 | 28/04/1997 | 28/11/1997 | Not Trading |
| IMES INTERNATIONAL LIMITED | SC540332 | 15/07/2016 | 01/12/2017 | Bronze |
| Ipsa Power Ltd | 03459840 | 08/02/2001 | 01/08/2004 | Dissolved |
| J. Ray McDermott International Services Ltd | 01432856 | 01/07/1996 | 01/04/1997 | Dissolved |
| Mentor Engineering Consultants Ltd | 02151688 | 31/03/1991 | 31/08/1996 | Dissolved |
| NMA OPERATIONS LIMITED | 02972338 | 22/09/2006 | 11/04/2014 | Bronze |
| OCEAN CONSERVATION TRUST LIMITED | 02674910 | 09/09/2005 | 21/09/2017 | Gold |
| OCEAN WAVEMASTER LIMITED | 04388819 | 06/03/2002 | 20/06/2011 | Dissolved |
| OPITO LIMITED | SC152175 | 20/11/2007 | 02/06/2008 | Amber |
| PIPELAY SYSTEMS LIMITED | SC543750 | 25/08/2016 | 01/12/2017 | Dissolved |
| RENEWS LIMITED | 04407990 | 02/04/2002 | 02/03/2017 | Gold |
| SCYLLA REEF LIMITED | 05042643 | 01/04/2007 | 05/11/2017 | Not Trading |
| SEANAMIC GROUP LIMITED | SC486006 | 19/09/2014 | 01/12/2017 | Bronze |
| SMITH REA ENERGY LIMITED | 01874922 | 02/12/1998 | 30/09/2004 | Dissolved |
| THE NEW ENERGY INDUSTRIES LIMITED | 06007611 | 23/11/2006 | 11/06/2010 | Dissolved |
| TNEI SERVICES LIMITED | 03891836 | 26/07/2002 | 11/06/2010 | Gold |
| UMBILICALS INTERNATIONAL (UK) LIMITED | SC521650 | 30/06/2016 | 01/12/2017 | Dissolved |
| UMITEK LIMITED | 04113818 | 24/02/2003 | 09/01/2007 | Dissolved |