| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A T C Pensions Trustees Ltd | 00750407 | 04/11/1993 | Dissolved |
| Alexandra Marine Transportation Ltd | 00498855 | 23/12/1993 | Dissolved |
| HUMBER SEAFARERS' SERVICE LIMITED | 08432595 | 06/03/2013 | Dissolved |
| Smith,Howard,(Felixstowe) Ltd | 00427497 | 23/12/1993 | Dissolved |
| Smith,Howard,(London) Ltd | 00146977 | 23/12/1993 | Dissolved |
| Sunderland Steamship Mutual War Risks Association Ltd | 00127258 | 06/09/1995 | Dissolved |
| The Medway Dry Dock & Engineering Co Ltd | 00672470 | 24/06/1994 | Dissolved |
| United Salvage Ltd | 01100719 | 26/07/1994 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Dilmun Navigation Co Ltd | 02103678 | 29/07/1994 | 07/06/1996 | Dissolved |
| EUROAIR TRANSPORT LIMITED | 00583173 | 23/12/1993 | 23/02/1995 | Gold |
| FELIXARC MARINE LIMITED | 04094541 | 25/05/2001 | 15/04/2004 | Bronze |
| Grimsby & Immingham Chamber of Commerce and Shipping | 00022635 | 25/06/1991 | 15/04/1992 | Dissolved |
| HUMBER SEAFARERS' SERVICE TRADING LIMITED | 09164436 | 30/09/2014 | 30/06/2022 | Not Trading |
| HUMBER TUGS LIMITED | 03124502 | 12/02/1996 | 15/04/2004 | Dissolved |
| Humberside Training & Enterprise Council | 02538476 | 10/09/1992 | 17/11/1993 | Dissolved |
| ROYAL TERRACE PIER ESTATE COMPANY,LIMITED(THE) | 00039148 | 23/12/1993 | 15/04/2004 | Dissolved |
| SVITZER EASTLANDS LIMITED | 02103679 | 21/04/1993 | 23/10/2006 | Dissolved |
| SVITZER HUMBER LIMITED | 00524008 | 19/09/1991 | 15/04/2004 | Dissolved |
| SVITZER TOWAGE LIMITED | 00024907 | 23/06/1993 | 15/04/2004 | Dissolved |
| SVITZER TUGMENS TRUSTEES LIMITED | 02918341 | 06/05/1994 | 25/09/2008 | Dissolved |
| Svitzer Personnel Services Ltd | 04563569 | 07/01/2003 | 15/04/2004 | Dissolved |
| Svitzer SPC3 Ltd | 04625083 | 21/03/2003 | 20/04/2004 | Dissolved |
| Svitzer Towage (Southampton) Ltd | 04136963 | 28/03/2002 | 15/04/2004 | Dissolved |
| The Alexandra Towing Co Ltd | 01313397 | 19/04/1995 | 15/04/2004 | Dissolved |
| UNITED SALVAGE LIMITED | 00229347 | 19/09/1991 | 15/04/2004 | Dissolved |
| UNITED TOWING LIMITED | 00172316 | 13/12/1993 | 15/04/2004 | Dissolved |