I was trained as an ATC Ops Clerk for my National Service(1957-1958).My first posting was to Wattisham and during the summer of 57 Wattisham closed for runway extension for the Lightening's arrival.I was then posted to Waterbeach and at both airfields we were operating "Fabulous".We were on 24/7 standby and each Thursday squadrons arrived to take their turn.It was pretty hectic with day and night squadrons changing over.From memory we had visits from squadrons from places such as Coltishall,Church Fenton,Middleton St George,Watton,West Raynham,Turnhouse and Horsham St Faith.In ATC we worked a shift pattern of five days on and three off,no extra duties.Hope this adds a bit more information to the discussion.