 The gatehouse, which apart from the church itself is the only surviving structure of the medieval priory, was built between 1330 and 1340.In the 15th century extensive work was undertaken, in part due to damage (believed to be from natural causes) in the northern part of the church.In the east end of the church, the early lancet windows were replaced by one huge window of stained glass, misericords were installed in the choir, and the tower was extended.