| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BKW TRUSTEE COMPANY LIMITED | 01252055 | 01/08/1994 | Dissolved |
| BWCRBS TRUSTEE COMPANY LIMITED | 03334038 | 11/03/1997 | Dissolved |
| PHIL ROLAND CONSULTANCY LIMITED | 06801927 | 26/01/2009 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BOSKALIS MARINE CONTRACTING LIMITED | 00635649 | 18/07/1994 | 07/01/2008 | One Red Flag |
| BOSKALIS WESTMINSTER (HOLDINGS) LIMITED | 00282243 | 10/12/1996 | 07/01/2008 | Bronze |
| BOSKALIS WESTMINSTER LIMITED | 00745328 | 30/12/1991 | 30/12/2004 | Bronze |
| BOSKALIS ZINKCON LIMITED | 02350942 | 10/12/1996 | 07/01/2008 | Dissolved |
| BRITANNIA AGGREGATES LIMITED | 02304376 | 18/09/1998 | 31/12/2008 | Amber |
| COASTAL AGGREGATES LIMITED | 03201157 | 17/01/1997 | 31/12/2008 | Dissolved |
| CORTEND LIMITED | 01196343 | 01/04/1997 | 31/12/2008 | Dissolved |
| HAKA U.K. LIMITED | SC109437 | 01/10/1994 | 07/01/2008 | Dissolved |
| HOLLAND DREDGING COMPANY (U.K.) LIMITED | 01291439 | 23/02/2004 | 07/01/2008 | Dissolved |
| LLANELLI SAND DREDGING LIMITED | 00338917 | 11/01/1995 | 07/01/2008 | Bronze |
| LONDON DREDGING COMPANY LIMITED | SC032081 | 01/09/2003 | 07/01/2008 | Dissolved |
| MARCHWOOD WHARFAGE LIMITED | 03201164 | 26/06/1996 | 31/12/2008 | Dissolved |
| NORTHWOOD(FAREHAM)LIMITED | 00576518 | 01/04/1997 | 31/12/2008 | Dissolved |
| P.V.W. INTERNATIONAL DREDGING AND HARBOUR WORKS LIMITED | 03005393 | 23/01/1995 | 07/01/2008 | Dissolved |
| PEVENSEY COASTAL DEFENCE LIMITED | 03776520 | 03/05/2000 | 16/07/2010 | Silver |
| R.W. AGGREGATES LIMITED | 03166538 | 04/04/1996 | 31/12/2008 | Dissolved |
| Railside Engineering Ltd | 02451824 | 28/11/2003 | 07/01/2008 | Dissolved |
| WESTMINSTER DREDGING COMPANY LIMITED | 01647790 | 01/01/1993 | 07/01/2008 | Gold |
| WESTMINSTER DREDGING/VAN OORD ACZ JOINT VENTURE LIMITED | 03887089 | 26/11/1999 | 07/01/2008 | Dissolved |
| WESTMINSTER GRAVELS LIMITED | 02380267 | 18/07/1994 | 28/12/2008 | Silver |
| ZANEN DREDGING & CONTRACTING CO. LIMITED | 01415672 | 18/07/1994 | 07/01/2008 | Dissolved |