In the July 1995 number of the Ecclesiastical Law Journal, Mr R. H. Bloor presented an interesting account of recent difficulties encountered by the parish church of St Mary's Belton with regard to the chiming of its church clock. In his article, ‘Clocks, Bells and Cockerels’, he took occasion to consider briefly the law relating to bells as a noise nuisance and usefully brought some unreported cases to the attention of readers of the Journal. He did not however consider one question which is, it is submitted, of peculiar importance to ecclesiastical lawyers, a question raised by the present author in a letter to The Times on 22 October 1994, namely whether the obligation of clerics to ring a bell under ecclesiastical and canon law can be a defence to a complaint of nuisance for the noise caused. Nor did he examine the differences which exist, particularly with regard to defences, depending upon whether the complaint is one of public, private or statutory nuisance. The present paper is therefore offered as a discussion of these points and as a wider review of the authorities relating to them.