HC Deb 22 August 1940 vol 364 c1483W
Mr. Groves

asked the Home Secretary whether air-raid wardens are, and will continue to be provided with whistles and rattles to announce to the people any immediate gas attack; and whether such equipment is always in the possession of such wardens?

Sir J. Anderson

Local authorities are authorised to provide wardens with whistles and rattles according to local requirements. Whistles are used to supplement the air-raid warning signals and may be retained in the wardens' personal possession. Rattles are used to give warning of gas danger and should be kept at the wardens' post.