| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Danislinks Ltd | SC056189 | 01/05/1991 | Dissolved |
| Fabrication Support Services Ltd | 02743636 | 01/07/1999 | Dissolved |
| HEEREMA HOOK-UP SERVICES LIMITED | 01232411 | 29/09/1992 | Insolvent |
| Heerema Engineering Service (U K) Ltd | 01244560 | 29/09/1992 | Dissolved |
| Heerema Holding (U K) Ltd | 01651764 | 29/09/1992 | Dissolved |
| Heerema Marine Contractors U K Ltd | 01303445 | 29/09/1992 | Dissolved |
| Heerema U K Services Ltd | 01961291 | 29/09/1992 | Dissolved |
| Vexaquest Ltd | 01653489 | 29/09/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CALEDONIA OFFSHORE DEVELOPMENT LIMITED | 02042719 | 29/09/1992 | 30/09/1994 | Dissolved |
| CEONA CHARTERING (UK) LIMITED | 08447784 | 15/03/2013 | 11/06/2015 | Insolvent |
| CEONA CONTRACTING (UK) LIMITED | 08447856 | 15/03/2013 | 11/06/2015 | Insolvent |
| CEONA EQUIPMENT LIMITED | 08473801 | 04/04/2013 | 11/06/2015 | Dissolved |
| CEONA HOLDING LTD | FC031392 | 13/06/2013 | 11/06/2015 | Insolvent |
| CEONA INVESTMENTS LIMITED | 08474012 | 04/04/2013 | 11/06/2015 | Insolvent |
| CEONA PTE. LTD. | FC031409 | 26/06/2013 | 11/06/2015 | Amber |
| CEONA SERVICES (UK) LIMITED | 07792825 | 07/03/2012 | 11/06/2015 | Insolvent |
| CEONA SHIP 1 LIMITED | 08447952 | 15/03/2013 | 11/06/2015 | Insolvent |
| CEONA SHIP 2 LIMITED | 08449124 | 18/03/2013 | 11/06/2015 | Dissolved |
| CEONA SHIP 3 LIMITED | 08449199 | 18/03/2013 | 11/06/2015 | Dissolved |
| CEONA SHIP HOLDINGS LIMITED | 08448785 | 18/03/2013 | 11/06/2015 | Dissolved |
| DE GROOT ENGINEERING LIMITED | 01411996 | 01/07/1999 | 27/09/2000 | One Red Flag |
| DE GROOT INSTALLATIONS (U.K.) LIMITED | 01505621 | 01/07/1999 | 27/09/2000 | Strike Off |
| De Groot Offshore (U.K.) Ltd | 01538487 | 01/07/1999 | 27/09/2000 | Dissolved |
| HEEREMA HARTLEPOOL LIMITED | 01287666 | 01/07/1999 | 27/09/2000 | Insolvent |
| LEADING OFFSHORE ENERGY INDUSTRY COMPETITIVENESS | SC199292 | 14/12/1999 | 12/12/2003 | Amber |
| NEWCO 987 LIMITED | 08121687 | 26/07/2012 | 11/06/2015 | Dissolved |
| OIG GIANT I PTE. LTD. | FC031410 | 26/06/2013 | 11/06/2015 | Silver |
| OIG GIANT II PTE. LTD. | FC031411 | 26/06/2013 | 11/06/2015 | One Red Flag |
| OIG GIANT III PTE. LTD. | FC031412 | 26/06/2013 | 11/06/2015 | Dissolved |
| PROJECT DEVELOPMENT INTERNATIONAL LIMITED | 04767497 | 30/07/2012 | 11/06/2015 | Gold |