Bonnington is a small two-cell church with western turret with a leaded ogee shaped roof, and northern porch, which stands on the banks of the Royal Military Canal. The building is of fourteenth-century appearance which resulted from a major reconstruction of a 12th C. original. The east wall contains three Norman windows. There is no difference between floor level in nave and chancel, which creates a homely and less mysterious feel. On the north side of the chancel arch is a small image niche, above which is a bracket which would have supported the rood beam. On the south side is an enormous pulpit with a large sounding board, whilst over the chancel arch is a large Royal Arms of George III dated 1774. The north-west window contains fragments of medieval glass, including three little heads, whilst the small bell turret is supported at the west end of the church by an enormous wooden construction.