Full title reads: "Millions of people have heard the `smiling voice' of Leslie Holmes `over the air' (especially when singing with Jack Payne's Band)."
Leslie stands in front of what looks like a strange box microphone. A pianist tinkles away in the background. Leslie does a little patter which...
A tour around the Post Office Radio Station at Rugby.
Footage of the interior of Broadcasting House, London.
Shot of communications tower at new wireless broadcasting station in Daventry.
A young man makes the hours in the fields go by - he carries a radio set with him.
A radio attached to a pram lets mother listen through headphones whilst walking her daughter.
A look at how valves work in microphones and radios.
Scientists test the latest radio speaker in an echo free chamber, London.
Various shots of the home of the British Broadcasting Corporation - Broadcasting House.