I am indebted to Michael Hodgson for sharing the below images. The Royal Life Saving Society ran courses to train people in artificial respiration. Many members of the Civil Defence Services qualified via these courses. Upon completion a specific 2" square badge (introduced in 1941) could be worn on the right breast pocket of battledress and Pattern 71 tunics . On civilian dress a plain metal badge was also available (at least one photo shows the coloured badge being worn by a warden very early in the war - possibly issued pre-war - see photo towards the bottom of this page).
A small certificate was also issued (see below). Below are the Respiration Service "RS" badge and certificate issued to Eugene Jennings. The issue number on the box is of interest as it allows for some understanding of other numbered examples being wartime dated. It looks like the owner hand painted parts of their badge in red.
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