| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| OIL GAS AND MARINE LIMITED | 09585157 | 11/05/2015 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACERGY EQUIPMENT LIMITED | SC148981 | 10/04/2008 | 04/11/2008 | Dissolved |
| CEONA CHARTERING (UK) LIMITED | 08447784 | 06/12/2013 | 25/09/2015 | Insolvent |
| CEONA CONTRACTING (UK) LIMITED | 08447856 | 26/09/2013 | 25/09/2015 | Insolvent |
| CEONA EQUIPMENT LIMITED | 08473801 | 11/06/2015 | 25/09/2015 | Dissolved |
| CEONA HOLDING LTD | FC031392 | 13/06/2013 | 25/09/2015 | Insolvent |
| CEONA INVESTMENTS LIMITED | 08474012 | 26/09/2013 | 25/09/2015 | Insolvent |
| CEONA PTE. LTD. | FC031409 | 11/06/2015 | 25/09/2015 | Amber |
| CEONA SERVICES (UK) LIMITED | 07792825 | 26/09/2013 | 25/09/2015 | Insolvent |
| CEONA SHIP 1 LIMITED | 08447952 | 11/06/2015 | 25/09/2015 | Insolvent |
| CEONA SHIP 2 LIMITED | 08449124 | 11/06/2015 | 25/09/2015 | Dissolved |
| CEONA SHIP 3 LIMITED | 08449199 | 11/06/2015 | 25/09/2015 | Dissolved |
| CEONA SHIP HOLDINGS LIMITED | 08448785 | 11/06/2015 | 25/09/2015 | Dissolved |
| NEWCO 987 LIMITED | 08121687 | 11/06/2015 | 25/09/2015 | Dissolved |
| OIG GIANT I PTE. LTD. | FC031410 | 11/06/2015 | 25/09/2015 | Silver |
| OIG GIANT II PTE. LTD. | FC031411 | 11/06/2015 | 25/09/2015 | One Red Flag |
| OIG GIANT III PTE. LTD. | FC031412 | 11/06/2015 | 25/09/2015 | Dissolved |
| PROJECT DEVELOPMENT INTERNATIONAL LIMITED | 04767497 | 11/06/2015 | 25/09/2015 | Silver |
| REEF SUBSEA UK LIMITED | 07783740 | 22/09/2011 | 07/03/2013 | Dissolved |
| SPECIALIST SUBSEA SERVICES LIMITED | SC325021 | 17/12/2010 | 01/03/2013 | Dissolved |
| SUBSEA 7 CHARTERING (UK) LIMITED | SC184511 | 10/04/2008 | 04/11/2008 | Gold |
| SUBSEA 7 INTERNATIONAL CONTRACTING LIMITED | 03073521 | 10/04/2008 | 24/05/2010 | Bronze |
| SUBSEA 7 WEST AFRICA CONTRACTING LIMITED | 02798293 | 28/04/2009 | 24/05/2010 | Gold |
| THAMES INTERNATIONAL ENTERPRISE LIMITED | 05665049 | 06/07/2009 | 24/05/2010 | Gold |
| X-SUBSEA ATLANTIC LIMITED | SC271911 | 11/11/2011 | 20/04/2013 | Dissolved |
| X-SUBSEA UK HOLDING LIMITED | SC357286 | 14/09/2010 | 05/03/2013 | Dissolved |
| X-SUBSEA UK LIMITED | SC149318 | 11/11/2011 | 20/04/2013 | Dissolved |