The tower was built during the 15th century, of rubble and puddingstone. The upper section was re-built during the 16th century, of brick. The church is in a fairly isolated position and the large three-light west window looks out over farmland - see note. The tower contains four bells. The two oldest are said to be the work of Robert Burford of London circa 1392-1418, meaning they are older than the tower. Their inscriptions read "Sancta Katerina Ora Pro Nobis" (Saint Catherine pray for us) and "Sit Nomen Domini Benedictom" (Blessed is the name of the Lord). The other two were cast circa 1898, by Bowell and Son of Ipswich, to commemorate the Golden Jubilee of Queen Victoria.