It consists of a nave and chancel without division, north and south narrow (passage) aisles, three north and south transepts, and a large central tower.[lower-alpha 1] The tower has a round-arched recess on each side containing round-headed two-light bell openings, which have louvres and Y-tracery. On top of the tower is a pyramidal roof. The southeast corner of the tower is chamfered and contains a canted stair turret surmounted by a pinnacle.