You're far too young to remember. There were two distinct moral panics about radio; the first in the 1930s when radio first became popular in the home, and the second in the early 1960s when transistorisation allowed teenagers to have radios of their own.

Until 1967, the BBC did not have a pop music station. Until 1973, commercial radio was illegal. The pirates who filled the demand for pop radio in the interim were hugely controversial. A great many column inches were spent fretting over the corrupting influence of foreign broadcasters, beaming salacious rock and roll music into the bedrooms of British children.