The present structure is essentially the creation of the Benedictine abbot, Serlo, and some of his 14C successors, who pioneered the Perpendicular style and embellished the transept and choir using funds provided by royal patronage or by pilgrims visiting the tomb of Edward II, who was murdered in Berkely Castle a few kilometres away, in 1327. The building was extended in the 15C by the addition of the Lady Chapel.