| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CRESS CARBON REDUCING ENERGY STORAGE SYSTEMS LIMITED | 06964529 | 11/01/2019 | Dissolved |
| Haven Tugs Ltd | 05816855 | 04/04/2007 | Dissolved |
| LEVENWOOD LTD | 07140562 | 29/01/2010 | One Red Flag |
| MICROPORE TECHNOLOGIES LTD | 04782008 | 10/12/2015 | Amber |
| Medway Tugs Ltd | 05742191 | 04/04/2007 | Dissolved |
| Mersey Tugs Ltd | 05742381 | 04/04/2007 | Dissolved |
| Solent Tugs Ltd | 05742193 | 04/04/2007 | Dissolved |
| Svitzer SPC3 Ltd | 04625083 | 04/04/2007 | Dissolved |
| Thames Tugs Ltd | 05816856 | 04/04/2007 | Dissolved |
| The Alexandra Towing Co Ltd | 01313397 | 04/04/2007 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALNMARITEC LIMITED | 05736364 | 12/10/2010 | 27/08/2014 | Insolvent |
| BIOSIGNATURES LIMITED | 06253158 | 28/09/2015 | 19/11/2018 | Insolvent |
| CORY SMIT WIJSMULLER LIMITED | 03101634 | 03/10/2001 | 01/12/2006 | Dissolved |
| CORY SMIT WIJSMULLER LIMITED | 03101634 | 01/01/2004 | 01/06/2009 | Dissolved |
| FELIXARC MARINE LIMITED | 04094541 | 04/04/2007 | 01/06/2009 | Silver |
| HUMBER TUGS LIMITED | 03124502 | 04/04/2007 | 01/06/2009 | Dissolved |
| NONLINEAR 1D LIMITED | 06253520 | 28/09/2015 | 19/11/2018 | Gold |
| NONLINEAR TECHNOLOGIES LIMITED | 06253177 | 28/09/2015 | 19/11/2018 | Insolvent |
| PHORETIX INTERNATIONAL LIMITED | 02760697 | 28/09/2015 | 19/11/2018 | Not Trading |
| ROYAL TERRACE PIER ESTATE COMPANY,LIMITED(THE) | 00039148 | 04/04/2007 | 01/06/2009 | Dissolved |
| SVITZER CREW SERVICES LIMITED | 00185144 | 03/10/2001 | 01/12/2006 | Dissolved |
| SVITZER CREW SERVICES LIMITED | 00185144 | 30/07/2004 | 01/06/2009 | Dissolved |
| SVITZER EASTLANDS LIMITED | 02103679 | 04/04/2007 | 01/06/2009 | Dissolved |
| SVITZER HOLDING UK LIMITED | 03897560 | 01/02/2002 | 01/12/2006 | Dissolved |
| SVITZER HOLDING UK LIMITED | 03897560 | 29/05/2002 | 01/06/2009 | Dissolved |
| SVITZER HUMBER LIMITED | 00524008 | 04/04/2007 | 01/06/2009 | Dissolved |
| SVITZER MARINE LIMITED | 00069494 | 07/06/2001 | 01/12/2006 | Gold |
| SVITZER MARINE LIMITED | 00069494 | 29/05/2001 | 01/06/2009 | Gold |
| SVITZER MARINE PENSION TRUST | 03353270 | 19/02/2002 | 06/05/2009 | Dissolved |
| SVITZER SPC4 LIMITED | 05472015 | 04/04/2007 | 01/06/2009 | Dissolved |
| SVITZER TOWAGE LIMITED | 00024907 | 04/04/2007 | 01/06/2009 | Dissolved |
| Svitzer P T Ltd | 04066923 | 03/10/2001 | 01/12/2006 | Dissolved |
| Svitzer P T Ltd | 04066923 | 15/10/2001 | 01/06/2009 | Dissolved |
| Svitzer Personnel Services Ltd | 04563569 | 09/02/2007 | 01/06/2009 | Dissolved |
| Svitzer Towage (Southampton) Ltd | 04136963 | 04/04/2007 | 01/06/2009 | Dissolved |
| TOTALLAB LIMITED | 06253160 | 28/09/2015 | 19/11/2018 | Gold |
| TYNE TOWAGE MARINE LIMITED | SC002997 | 03/10/2001 | 01/12/2006 | Dissolved |
| TYNE TOWAGE MARINE LIMITED | SC002997 | 01/03/2002 | 01/06/2009 | Dissolved |
| UNITED SALVAGE LIMITED | 00229347 | 04/04/2007 | 01/06/2009 | Dissolved |
| UNITED TOWING LIMITED | 00172316 | 04/04/2007 | 01/06/2009 | Dissolved |