The current church is rectangular in plan, consisting of a single nave of eight bays with aisles along the whole length of the church on either side. The church's architectural style can be described as "Survival Gothic" – that is, Gothic architecture that continued after the Reformation – fused with Baroque. The exterior walls of the church consist of harled rubble with ashlar dressings. The church is 162 feet (49 meters) long by 72 feet (22 meters) wide. Externally, each bay is divided by buttresses, each of which is capped by a ball-topped obelisk finial. The buttresses at each corner of the church rest diagonally. The roof rises steeply above the aisles to a short course of wall, above which the roof over the nave continues at a shallower pitch.