The choir is about 134 feet long, 34 feet 6 inches wide between the columns, and 72 feet 6 inches between the aisle walls.
The nave is not so wide by about 12 feet, and as the columns of both nave and choir on the south side are on the same line, the extra width is all on the north.
Looking westward, the view is marred by the tower arch not being in the centre of the west wall, in consequence of which there is an ugly space of blank wall between the arch and the north choir aisle.
There are eight bays, averaging about 18 feet in width. Those at the end, however, east and west, are not so wide. At the east they probably suffer from the intrusion of the east wall, which is about six feet thick. The western bays may have lost the space taken for the choir entrance. They have very acute arches, and at the west end rest on responds or half-piers against the tower walls. Those at the east end rest on brackets, and their mouldings lose themselves in the wall on each side of the great window.
The presbytery is reached by two steps from the choir, and the last bay but one (in which the altar stands) is raised three steps above the presbytery.
The main arcade practically dates from after the terrible fire in 1292. The arches escaped, and are splendid specimens of Early English, "of the Pointed style in all the purity of its first period." They were underbuilt with Early Decorated piers, while the capitals were finished at the same time as the triforium and clerestory (Late Decorated) 1350-1400.
The piers are not equal in diameter to those of the nave; they measure but five feet and a quarter. Each consists of eight clustered pillars of red sandstone. The four facing the cardinal points of the compass are larger than the intermediate ones, which are filleted. The base moulding is very deep and hollow. These piers support the Early English arches, with dog-tooth ornament large in the interior, small in the exterior. Altogether, these fine arches give a very pleasing impression of lightness and grace, and make us feel "the fascination of the Pointed style."
At the junctions of the arches are small grotesque heads very well executed. On the north side, where the presbytery begins, is a queen's head, and on the opposite side a figure with a dog's head.
There are altogether fourteen complete, and two half piers, the capitals of which are carved with foliage alone, or with the addition of winged monsters, birds, beasts, and human figures. Twelve of them represent the domestic and agricultural occupations of the months. The first capital on the south side (east end) shows a creature with a man's head, wings, and a tail terminating in the head of a serpent, which bites the monster on the temple. January is symbolised on the next one, and the series continues westward, then crosses over, and proceeds from west to east on the north side, finishing at the last pier but one.