| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Business Holyhead | 05109374 | 22/04/2004 | Dissolved |
| FIRST FLOWERS LIMITED | 03774181 | 14/06/1999 | Dissolved |
| FIRST FLOWERS LIMITED | 03774181 | 14/06/1999 | Dissolved |
| HOLYHEAD MARINE SERVICES LIMITED | 00895484 | 22/12/2006 | Gold |
| THE UCHELDRE CENTRE | 02621963 | 19/06/1991 | Silver |
| THE UPSILON FOUNDATION | 03214982 | 21/06/1996 | Dissolved |
| TURBINE BOAT CHARTERS LIMITED | 07166793 | 01/03/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BUSINESS ON ANGLESEY | 04374016 | 17/06/2003 | 19/05/2005 | Dissolved |
| HOLYHEAD BOATYARD LIMITED | 00724907 | 21/12/2010 | 25/10/2024 | Gold |
| HOLYHEAD TOWING COMPANY LIMITED | 00871758 | 22/12/2006 | 25/10/2024 | Gold |
| MAINSTAY MARINE SOLUTIONS LIMITED | 08938325 | 21/05/2014 | 09/06/2021 | Silver |
| PENRHOS HIRE & SALES LIMITED | 04889676 | 05/09/2003 | 31/08/2016 | Dissolved |
| PENRHOS HIRE & SALES LIMITED | 04889676 | 05/09/2003 | 31/08/2016 | Dissolved |
| TURBINE TRANSFERS LIMITED | 06810857 | 05/01/2010 | 25/10/2024 | Not Trading |