| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Acqua (Uk) Ltd | 04433353 | 30/04/2004 | Dissolved |
| Dyfed Waste Ltd | 02479395 | 12/03/1991 | Dissolved |
| Dyfed Waste Ltd | 02479395 | 12/03/1991 | Dissolved |
| M.B.H.1 Ltd. | 02914368 | 19/05/1994 | Dissolved |
| Milford Dry Dock Company Ltd | 00192184 | 26/04/1995 | Dissolved |
| Milford Dry Dock Company Ltd | 00192184 | 26/04/1995 | Dissolved |
| Milford Haven Pilotage Ltd | 02216982 | 30/04/1996 | Dissolved |
| Milford Marine Services Ltd | 01310284 | 26/03/1998 | Dissolved |
| Milford Marine Services Ltd | 01310284 | 12/05/1995 | Dissolved |
| Oriel Cymru Llundain Cyfyngeoig | 02875028 | 25/11/1993 | Dissolved |
| Oriel London Contemporary Art Limited | 02675845 | 18/01/1992 | Dissolved |
| Pembroke Port Ltd | 03654498 | 16/11/1998 | Dissolved |
| Pembroke Port Ltd | 03654498 | 16/11/1998 | Dissolved |
| Raldonstar Ltd | 02577810 | 29/01/1991 | Dissolved |
| Raldonstar Ltd | 02577810 | 29/01/1992 | Dissolved |
| Singlepower Ltd | 02498896 | 03/05/1992 | Dissolved |
| Singlepower Ltd | 02498896 | 03/05/1992 | Dissolved |
| Swift Construction (Wales) Ltd | 03965334 | 19/12/2000 | Dissolved |
| Swift Construction (Wales) Ltd | 03965334 | 19/12/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CHANNEL ENVIRONMENTAL SERVICES LIMITED | 02411759 | 12/11/1992 | 24/03/1995 | Dissolved |
| ECOVERT DLS LIMITED | 02844320 | 16/08/1993 | 24/03/1995 | Dissolved |
| Ecovert Management Ltd | 02297916 | 12/11/1992 | 01/04/1994 | Dissolved |
| Ecovert Wycombe Ltd | 02807487 | 01/04/1993 | 24/03/1995 | Dissolved |
| Industrial & Environmental Services Ltd | 02697054 | 11/05/1992 | 13/11/1992 | Dissolved |
| L. & C. Waste-Tech Ltd | SC108971 | 31/12/1989 | 01/06/1990 | Dissolved |
| LEDWOOD MECHANICAL ENGINEERING LIMITED | 04045742 | 25/11/2000 | 29/05/2008 | Silver |
| LEDWOOD MECHANICAL ENGINEERING LIMITED | 04045742 | 29/05/2008 | 26/01/2012 | Silver |
| LEDWOOD PROTECTIVE COATINGS LIMITED | 07137654 | 16/03/2010 | 08/10/2012 | Bronze |
| MHPA RBS TRUSTEE COMPANY LIMITED | 08745417 | 23/10/2013 | 31/03/2017 | Not Trading |
| Milford Marine Services Ltd | 01310284 | 12/05/1995 | 27/07/1995 | Dissolved |
| PHOENIX BOWL LIMITED | 04140347 | 22/01/2001 | 23/01/2008 | Silver |
| PNPF TRUST COMPANY LIMITED | 02147540 | 09/11/2001 | 05/07/2011 | Gold |
| STALWART ENVIRONMENTAL SERVICES LIMITED | 02411877 | 11/11/1992 | 24/03/1995 | Dissolved |
| THE FOSSE GROUP LIMITED | 02372201 | 12/11/1992 | 24/03/1995 | Dissolved |
| TREHIR DEVELOPMENT COMPANY LIMITED | 02146992 | 27/09/1994 | 06/03/1995 | Dissolved |
| TREHIR DEVELOPMENT COMPANY LIMITED | 02146992 | 27/09/1994 | 06/03/1995 | Dissolved |
| WILLIAMS MARINE & PORT SERVICES LIMITED | 05087740 | 11/08/2004 | 16/04/2010 | Dissolved |
| WILLIAMS MARINE & PORT SERVICES LIMITED | 05087740 | 11/08/2004 | 16/04/2010 | Dissolved |