I saw this site mentioned on an English Heritage Web Site and thought I would have a look whilst in the area.
Taking the minor road west out of Watchet (pretty port) the road climbs steeply uphill. Just before the top there is room to pull in on the right next to a metal field gate. I was surprised to find an English Heritage information board near the gate.
Through the kissing gate and a short walk up to the brow of the hill.
There isn't much to see of the fort, just some faint remains of earthworks on the western side. There are however cracking coastal views which make a visit well worthwhile.