The choir has broad arches with two wave mouldings carried down the piers which support the ribs of the vaulting. These may have been designed by Thomas Witney or William Joy as they are similar to the work at Wells Cathedral and St Mary Redcliffe. The choir is separated from the eastern Lady Chapel by a 14th-century reredos which was damaged in The reformation and repaired in 1839 when the 17th-century altarpiece was removed. The Lady Chapel was brightly painted in the late 19th and early 20th centuries following existing fragments of colour. To the south east of the choir and Lady Chapel is the Berkeley Chapel and an adjoining antechapel or sacristy, which may have been added in the 14th century, possibly replacing an earlier structure.