Salt making by evaporation of seawater was an important coastal industry from at least Saxon times until the late 18th century. The decline during the 17/18th centuries resulted from a salt tax and also competition from cheaper mineral salt from inland mines in Cheshire.
Salt making on the Island was in two locations; Newtown (from Norman times until about 1880) and Seaview (late 18th century until about 1820).