| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Highland Petrochemicals Ltd | 02369383 | 30/04/1991 | Dissolved |
| RAM 106 LTD | 05549025 | 20/09/2005 | Dissolved |
| The Liverpool Port Company Limited | 02641771 | 19/12/1991 | Dissolved |
| The London Port Company Limited | 02641764 | 19/12/1991 | Dissolved |
| The Tees Port Company Limited | 02641773 | 19/12/1991 | Dissolved |
| Uk Independent Port Association Ltd | 03029323 | 06/03/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| A & P Holdings Ltd | 02474515 | 27/02/1992 | 23/12/1993 | Dissolved |
| ACTUAL LIMITED | 03003905 | 08/08/1995 | 08/09/2021 | Dissolved |
| Nephelist Limited | 02328511 | 15/10/1990 | 27/11/1990 | Dissolved |
| Omentic Limited | 02354598 | 15/10/1990 | 27/11/1990 | Dissolved |
| PENDENNIS SHIPYARD (HOLDINGS) LIMITED | 02281468 | 28/11/2006 | 13/01/2022 | Silver |
| SS GREAT BRITAIN TRUST | 01000878 | 03/05/2000 | 15/11/2006 | Silver |
| THE BRISTOL PORT COMPANY (TRUSTEES) LIMITED | 02616396 | 15/08/1991 | 13/05/1992 | Not Trading |
| THE HARBOURSIDE FOUNDATION | 03254665 | 11/03/1998 | 08/07/1999 | Dissolved |
| THE UNITED KINGDOM MAJOR PORTS GROUP LIMITED | 02787097 | 18/11/1998 | 27/01/2010 | Silver |