The 14th century timber tower stands against the west wall of the south aisle. It was built to a cruciform shape at ground level (each arm is independently gabled), with a square bell tower and an octagonal spire. The tower was originally covered in wattle and daub but is now weatherboarded. There are two Gothic windows on the south side of the ground floor, and an oriel was built into the upper section in the 17th century to accommodate a larger peal of bells.