Elegant mid-to later C19 bank building with 3-storey, 5-bay facade to St Mary Street; ashlar dressings. Arcaded round-arched window openings with vermvulated voussoirs and mask keystones on ground floor; dentil cornice; pedimented 1st floor windows with balconettes; segmental 2nd-floor windows; dentil and modillion cornice. Entrance via late-C20 glazed and concrete link wing on N..