Civil Defence Information Bulletin were a series of seven public information films starring Robert Urquhart, dealing with civil defence measures individuals and families could take in the event of a nuclear attack on Great Britain.
Each film was a few minutes long and would feature the ominous jingle with the civil defence logo.
Then there was a blank title card on the subject matter and then a mix of live-action clips, animation and still images.
The advice contained in the films relied on (referred to as an inner refuge in Protect and Survive) and the idea of white washing the windows to prevent fires.
The warning system features four coloured warning systems (red meaning imminent attack, grey meaning fallout in one hour, black meaning imminent fallout, and finally the all clear) similar to the system formalised by the UK Bikini state levels from 1970.