North Arch

North Arch is a mid-18th century building that originally comprised two houses and is now used as offices and a doctors' surgery. It features brick construction in header bond and a graduated stone slate roof. The building stands three stories tall and has eight bays.

In the fifth bay, there is a segmental-arched carriage opening. The second and seventh bays contain rusticated quoined round-arched doorways with extended voussoirs. The doorway in bay two (No 277) has a six-fielded panel door below a fanlight with radial glazing bars, while the doorway in bay seven (No 280) features a 20th-century part-glazed door below a fanlight with decorative glazing bars.

On the ground floor, there are late 19th-century canted bay windows supported by thin pilasters with lotus capitals, topped with modillion cornices and lead roofs. The first floor has four-pane sash windows with flat arches, and the second floor has half-size four-pane sash windows with shorter flat arches. Decorative lead rainwater pipes with hopper heads are located at each end and to the left of the carriage arch.

The building has shaped kneelers and ashlar coping, with brick stacks positioned at the ends and between the third and fourth, fourth and fifth, and fifth and sixth bays. The entrance to No 279 is accessed from the archway. The rear of the building has a pantile roof, and No 277 includes a large 20th-century single-storey extension at the back. No 278 is not of special interest.