aisles, C15 chancel, chapels and tower.
EXTERIOR: the polygonal chancel end has 3-light Perpendicular windows, separated by narrow buttresses with slender diagonally-set buttresses rising from the lower water table to crocketed pinnacles above the crenellated gable parapet, and expressive human gargoyles heads to the drip
inside, the C13 doorway has a continuous inner arch and an outer one with Purbeck marble shafts and stiff leaf captials.
Three C13 stepped lancets in the W window to the S aisle, with a square turret in the angle with the porch
2-centred W doorway has a tracery-panelled door and strap hinges, 4-centred Perpendicular second-stage window, under a C19 niche with side pinnacles and a crocketed ogee hood, containing a seated figure of Bishop Carpenter
gargoyles to the drip, a crenellated parapet with crocketed pinnacles and a spirelet to the stair turret with open cross windows and a fine C19 openwork top.
3-bay nave, the N arcade with round piers, moulded capitals and chamfered arches and a doorway and steps up to the pulpit at the E end, and a wider-spaced S arcade with thicker piers and small foliage decorations to the capitals
FITTINGS: C15 timber altar rail with open, cusped ogee arches, bishop's chair with a ribbed back, bound chest with a lock and 2 padlocks, plain chest incribed as a gift from Jeremy Innys, 1759, brass lectern with a barleysugar stand and 4 supports, large C19 pulpit with marble shafts, C19 font, octagonal on marble shafts, and poppy-head pews.
MEMORIALS: wall memorial in the S chapel c1610, a painted aedicule containing a kneeling man with a shield above
marble wall tablet to Martha Jacobs d. 1616, an aedicule with panelled pilasters, a triglyph frieze and urn on top
wall memorial to William Jeffries d. 1752, a pedimented panel beneath an obelisk, with rocaille decoration
marble wall memorial to James Morgan d. 1780 with fluted pilasters and a shield on top.
HISTORICAL NOTE: a Benedictine monastery existed in Westbury, perhaps as early as AD 720, which became the earliest reformed house in England in 962.
The S chapel is known as Canynge's after the great Bristol merchant William Canynge who was Dean of Westbury 1469-74.