Arriving at the last roundabout from the A55 you will see McDonalds and Asda supermarket on the left hand side of the road.
Take first left off the roundabout (signed to Trearddur Bay B4545).
Immediately take the first right turn between the Angel Chippy (red Building) and an old Pub, currently being refurbished. There is a white road sign for Porthdafarch Road. This turning is before the pelican crossing you see ahead of you.
Continue out of Holyhead along this road for 1.5 miles.