EXTERIOR: elevations consistently C15 except for south and north transepts and the north porch actually the Treasury).
INTERIOR: mixed C13
C15 work.
The chancel and its aisles all C15, including the piers, which have four-wave mouldings.
The crossing piers appear trimmed back, the main nave piers all C13, heightened by matching C15 work by another 3m, carrying a Somerset timber roof, low pitch with the beams for every second principal, with bravery over, lavishly ornamented with angels, rosettes and shields, all fully coloured after a 1963 restoration by Alan Rowe.
The treasury (in position of a north porch) of C13 character, now the choir vestry
immediately eastwards the 2-bay Chapel of the Holy Trinity, C15, and associated with the City Corporation.
Amongst the memorials are a medieval incised inscription to Thomas Tanner (late C14), altar tomb of Thomas Leigh , and his wife, brass to Francis Hayes in stone surround, a large stone monument with effigy to one Luellin , and a C18 monument to R Kingston signed by Nathaniel Ireson of Wincanton.