Mike Raven (Austin Churton Fairman) (15 November 1924 – 4 April 1997) interviewed in 1970 by Andy Finney on STOIC (Imperial College student TV) about his involvement with Radio Atlanta (from the inception of the project in 1962), but starting by referring back to Radio Normandie and Captain Plugge. Raven tells how he was asked to report on whether it was practical to restart Radio Invicta, but instead started Radio KING and goes on to explain how Radio KING became Radio 390.
https://www.youtube.com/watch?v=mEQb1Cf5PC0