 All of the church's exterior corners have octagonal corner turrets with gabled niches and terminating in spires with gablets.The façade has pinnacled buttresses and corbelled parapets.The main entrance is at the east end, from Gordon Street, through a gabled porch with angle buttresses (with mouldings, a pointed-arch door and a two-light and oculus plate tracery window above the door) which links onto the Lady Chapel via an octagonal turret and two-light room.