Churches with round towers are unusual: they are found mostly in East Anglia.

The Round Tower Churches Society (RTCS) was established in 1973 to help preserve these churches and to explore their origins and history. There are  186 in England including those in a semi-ruinous condition and visible remnants of fallen towers. All are in East Anglia except for three in Sussex and two in Berkshire. Norfolk has 131, Suffolk 41, Essex seven and two in Cambridgeshire, according to the leading architect and authority on round tower churches, Stephen Hart.