The genesis of black music radio in London : 1970-1984 : Radio Invicta 92.4

I only knew 'Roger Tate' (real name Bob Tomalski) through listening to his programmes on the radio. He was a DJ on 'Radio Invicta', London's first soul music radio station, launched in 1970. Invicta was a pirate radio station. Back then, there were no legal radio stations in the UK other than the BBC.