St John's United Reformed Church and schoolroom

St John's United Reformed Church and schoolroom is a Gothic style chapel, constructed in the 18th century using yellowish stone with dressings and quoins of paler Bath stone. The building has slate roofs and a prominent, cross-gabled design. The main facade is gabled, facing South Parade, with cross-gabled aisles and a three-stage tower with a broach spire positioned between the east front and the north aisle.

The exterior features a coped gable with a finial, side buttresses with long set-offs, a plinth, and an ashlar first floor with a flush sill band. The windows are paired, pointed, two-light designs with roll-moulded arches, column shafts with carved capitals and a roundel above the lights, and stone voussoirs. The central doorway has a pointed roll-moulded arch, column shafts, and an inset, shouldered-headed entry with double doors. A hoodmould runs across each side as a string course and steps down over small lancet windows on either side. The side aisles possess four separate coped gables, three with single lights, while the larger end gables have paired lights, separated by stepped buttresses. The northeast corner contains the tower, and the southeast corner is not built upon.

The northeast tower is divided into three stages by string courses, with quoined buttresses on the east and west sides, and is topped with gablets at the base of the third stage. A pointed doorway, similarly roll-moulded with column shafts, gives access, while the second stage features plain lancets on each face and the third stage has flush quoins, chamfered corners and a clock on the three visible faces. Corbels are positioned above, beneath a heavy ashlar broach spire. This spire has a splayed base, nook shafts, and tall, shouldered-gabled surrounds with pointed, louvred bell openings on each side. The imposts of the pointed openings are level with the base of the spire proper, with gables standing clear of the base, which is broached from square to octagonal. The total height of the tower reaches 24 metres.

A coped gable marks the west end, alongside a large schoolroom spanning the rear and a half-hipped end wall to Warren Street. This section features three pairs of long, shouldered-headed lights above a high string course. A gabled porch with a coped gable and pointed arch is located to the left, between the schoolroom and the chapel's northwest corner. Attached to the west side wall of the schoolroom are single-storey classroom projections constructed from squared grey limestone with ashlar dressings. Two coped gables face west, one being smaller, with a three-light mullion window in a side wall to Warren Street. The right gable projects further and is accessed by a side wall, gabled porch across the front of the left gable. The west end has a stepped triplet of shouldered-headed lights, with the centre light being blind. A cross gable is located to the right, facing south.

Inside, the church features a Gothic aisled interior with thin iron columns, carrying deep arched trusses and raking struts supporting axial purlins. A triple-arched feature is positioned against the end wall, containing a restored rose window with stained glass. Other features include a movable drum pulpit, pitch pine pews, and a gallery at the entrance end.