Bill Dwyer's reporter character is identified in the dialogue as "Mr. Worthington". Charlie Clapham is referred to only as the editor's son.
The characters of William Garland and inventor A. Bird are obvious references to John Reith ("garland/wreath") and John Logie Baird
The name of the radio network - National Broadcasting Group - gives the initials NBG. In 1930's Britain this stood for "No Bloody Good".