I agree about Len Vass. Whilst I was home on leave from Africa I contacted Len to see if I could visit LATCC. He duly fixed it and I sat in on TMA(S), where he was the Crew Chief, for an evening. I corresponded a lot with Len whilst I was overseas. A thoroughly nice person - an amusing to be with too!!
When I left school in 1961 I became a Clerical Assistant at MoA HQ in Woburn Place where there were plenty of ATCOs. George Endersby and Charlie Fearn were in an office opposite mine. Lucky Craven was downstairs. Used to play snooker with John Griffiths and there were many, many more. All great characters and all, sadly, long gone. My first Watch Sup at Heathrow was Geoff Large who is, I believe, still alive and well... as is JK!