Briton Ferry (Welsh: Llansawel) is a town and community in the county borough of Neath Port Talbot, Wales. The town encompasses the electoral wards of Briton Ferry East and Briton Ferry West.Briton Ferry is on the mouth of the River Neath where it enters Swansea Bay and was the first river crossing along the Roman road that followed the coastline along that part of South Wales. The river crossing was by ferry boat some 2 miles (3.2 km) from the bridge across the River Neath at Neath.