18, South Street

No. 18 South Street is an 18th-century building constructed of red brick with a pitched tile roof and stone slates above the eaves. It features a red brick stack and stands two storeys tall with attics. The building has a brick modillion eaves cornice. The ground floor has a modern ashlar bank facade, while the first floor contains two cased sash windows with glazing bars. There is one attic dormer that has a hipped tile roof, tile-hung cheeks, and a casement window. This property is part of a group that includes Nos. 2 to 10 (even), the Unitarian Chapel, Nos. 12 to 32 (even), and the Holy Trinity Gallery.