Johnny Johnson joined the RDF (radar) research team at Bawdsey Research Station in June 1939. I remember him working on navigational aids. He remained at TRE after the war but later left to join Industry.

He worked on guided weapons at Vickers Weybridge and subsequently was the Director of the Central Electricity Generating Board Research Centre at Marchwood. He was an advisor to Marconi Underwater Systems on techniques for geological searches for oil deposits under the seas.

He was the main editor for the IEE special issue on Historical radar in October 1985 - see the Penley Radar Archives link below. 

Bill Penley