The talk was given by Michael Pollitt, formerly the agricultural editor of the EDP and now Vice-Chairman of the Round Tower Churches Society. He described how there are 180 round tower churches in England, of which 124 are in Norfolk and some others in the rest of East Anglia and elsewhere. As to the origin of them, the most widely accepted theory is that they were built as bell towers, generally built at the same time as the adjoining churches, or added later. (There are some exceptions.) The circular form was favoured partly because this was easier with the flints and mortar which were available locally and also this form gave extra strength to each tower. Michael mentioned that most round church towers were built between 1000 and 1400 AD.