HC Deb 11 March 1943 vol 387 c876W
Mr. Granville

asked the Secretary of State for War whether any decision has been reached with regard to the ringing of the church bells for sea as well as air invasion?

Mr. A. Henderson

Yes, Sir. Instructions have been issued for church bells to be used as a local alarm signal for raids or any other form of attack by enemy seaborne or airborne troops.