This is another phone box that Dad spotted while travelling!
(Coordinates 54°99’32.9″N, 1°45’08.2″W.)
You can’t quite get into the ferry terminal on Google Street View, but you can just about see the phone box from the parallel road.
Despite the fact that it’s a local phone box to me, I’ve not seen this one in person, due to the fact that I don’t travel by ferry very often. If I ever do, I’ll look out for it!