Wellsworth lies near the coast at the northern end of a peninsula close to Suddery. Nearby is a large hospital which serves the majority of Sodor's inhabitants and a nunnery.
In Thomas' Sodor Adventures, the shed has four berths for BoCo and Derek. The other two berths were for Bill and Ben, but since the clay pits returned in full CGI in Tale of the Brave. They no longer sleep here.