A systematic examination of the exterior may best be begun with the Western Tower. This is of fifteenth-century date, and is set partially within the church—that is to say, its builder did not add it to the west of the church, making an archway [!--IMG--]
Next comes the North Porch, with a chamber above it—here, as in many other churches, the chief entrance into the building. Its great dimensions, both in length and height, however, are remarkable; it projects 40 feet beyond the aisle wall, and its own side walls rise nearly to the height of the clerestory of the church. Its south end does not extend beyond the wall of the aisle, so that there is a space between the upper part of the porch and the clerestory. The upper part above the porch proper contains, as mentioned above, a lofty chamber, probably originally the muniment-room. This is lighted by two pairs of narrow single-light windows on either side, and by a similar pair in the north face beneath the obtuse-angled gable. This room is, no doubt, a later addition. The entrance into the porch is a beautiful, deeply-recessed archway of thirteenth-century date, with numerous shafts of Purbeck marble on either side. Within the porch the side walls are divided into two compartments, each of which is composed of two pointed arches beneath another larger pointed arch, with a cinquefoil in the head. On the west side, near the outer archway, is a cinquefoiled recess, with shafts of Purbeck marble and foliated cusps. This is said originally to have contained a desk, at which the prior met the parishioners and signed deeds. A stone seat runs along each side of the porch walls. The double doorway which leads into the church is very beautiful and rich Early English work. From six Purbeck marble shafts on either side spring the orders of the enclosing archway; the heads of the double doorways themselves are cinquefoiled arches with foliated cusps. At the jambs, and dividing the two doors, are clusters of Purbeck marble shafts, with moulded capitals. In the tympanum is a quatrefoil, the upper part of which projects so as to form a canopy. This was, no doubt, intended to contain some carved subject, possibly the Doom. Very extensive restoration was carried out in the groining and porch generally, in 1862.