The Port of Mostyn is a medium-sized port which lies on the Welsh side of the Dee Estuary within 3 nautical miles from the Irish Sea. Geographically, the Port of Mostyn in situated in Flintshire, North Wales close to the border with England. It has a direct access to the A548 coastal road connecting it to the UK motorway network and is just 15 miles from the M56 motorway.