The nave is covered with complex geometric designs painted when the building was first constructed, in 1130. In amongst the designs are faces of religious figures, and the vaulting once displayed biblical scenes. The 15th century rood screen is contemporaneous with the crown-post roof. On the right you can see the remains of one of the original shafted windows, above the arch created when the south aisle was commenced. This is the oldest internal arch in the church and may originally have been built into a transept, which was gradually enlarged to become the south aisle. The second arch is built entirely of brick, only some of which was re-used from Roman buildings. The other bricks were manufactured locally, and are among the earliest medieval ones in England. This arch was completed before 1300. The westernmost arch was inserted in the late 14th/early 15th century, at the same time as the porch and belfry were added. The south arch in the chancel is a Victorian addition.