The nave and choir have aisles, triforium and clerestory.
The church, which rises high above the buildings clustering round it, consists of transepts and four bays of the nave of Romanesque architecture and of a fine choir (1450 - I 521) in the Flamboyant Gothic style with a triforium surmounted by lofty windows.
The original triforium is transformed into a clerestory, the original clerestory being lost.
Exquisite ornament is seen in the triforium arcade, and between some of the arches in the transept are figures, especially finely carved, though much mutilated, known as the censing angels.
The top of the narthex forms a wide gallery, communicating with the interior at the triforium level.
The nave passes from Norman to Early English in the course of its eight bays from east to west and also from the arcade through the triforium to the clerestory.