Re: dear, oh dear, El Reg
I'm sure they were thinking of TV.
You are quite correct about WWII domestic Radio.
As Domestic Radio only started about 1922, any WWI tomfoolery would have been military.
Interference though on commercial Morse from other commercial stations and "Amateurs" was common enough from 1900s to 1914.
Sales of radio kits to public to listen to time signals and commercial radio telegraph traffic was from about 1912, about 10 years before scheduled public voice broadcasts.