| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Amlwch Shipping Agency Limited | 01010257 | 30/11/1992 | Dissolved |
| Anglesey Shipping Agency Ltd | 01009953 | 30/11/1992 | Dissolved |
| HOLYHEAD MARINE SERVICES (SCOTLAND) LIMITED | SC112654 | 30/11/1992 | Insolvent |
| Medway Marine Services Limited | 02450701 | 30/11/1992 | Dissolved |
| Milford Haven Towing Co Ltd | 03051334 | 31/05/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Buoywork (Anglesey) Ltd | 01148912 | 18/01/1993 | 15/03/1999 | Dissolved |
| HOLYHEAD BOATYARD LIMITED | 00724907 | 06/04/1992 | 15/03/1999 | Gold |
| HOLYHEAD MARINE SERVICES LIMITED | 00895484 | 30/11/1992 | 15/03/1999 | Gold |
| HOLYHEAD TOWING COMPANY LIMITED | 00871758 | 30/11/1992 | 15/03/1999 | Gold |
| Holyhead Shipping Agency Ltd | 00789913 | 12/12/1993 | 15/03/1999 | Dissolved |
| Penrhos Plant Hire Ltd | 01499563 | 30/11/1992 | 15/03/1999 | Dissolved |