Holy Trinity Church

Holy Trinity Church is a Grade II listed building featuring parallel apsed naves, with the larger and earlier nave located to the east. Both naves include a narthex, while a lower vestry, positioned at an angle on the northeast of the site, is a later addition.

The church is constructed from coursed squared Bath limestone of near ashlar quality, topped with Welsh slate roofs that have tile cresting. The south elevation displays twin gables of differing sizes and styles, separated by a tall bell-cote. On the right, the narthex features a four-bay ground floor with doorways flanking three-light windows, all set within a recessed Gothic arcade. Above this is a blind arcade flanked by tabernacles, and further up, there is a five-light arcaded window and a pierced rose in the gable. To the left, the narthex is quite plain above a large portal and may be a much later addition, with a two-light Decorated window in the gable above. The central gabled bell turret is buttressed and rises above a projecting stair turret. The east elevation shows five bays of two-light Decorated windows separated by buttresses, while the apsed chancel has seven single-light windows and a corbel table above. The west elevation reveals two storeys due to a fall in the ground, with four bays divided by strip buttresses, a plain two-light window below, and a Decorated window above, creating the impression of a transom. The nave is shorter than the eastern one, and its apse is half-octagonal rather than semicircular. A single-storey vestry has been added to the northeast corner.

Inside, the church has a nave with a northwest aisle, a northwest chapel, and an apsed sanctuary accessed by marble steps. The five-bay arcade features stiff leaf caps, and the roof is a hammer beam and kingpost design, close boarded throughout. There are three wall monuments that predate the church and may have originated from St Mary's Chapel, Queen Square, which was demolished around 1870. These monuments are in a Neo-classical style, including one dedicated to Colonel Robert Bull, who died in 1833 and was a veteran of the Peninsular and Waterloo campaigns, complete with a trophy of arms. Another monument is to his daughter, also signed Biggs, and the third honors an Indian veteran. The Gothic style font and pulpit are contemporary with the church. A later addition to the nave has been converted into offices and meeting rooms, with a large meeting room on the upper floor.