Nice photo mate. I spent many months at Keston with my inventions and thoughts on scents, thanks primarily to John Stevens who had lots of faith in me, leter to become Lord Stevens after the Met Commissioner. He was my immediate boss in Cambs when he first got promoted to ACC.
Not commonly known, he was a BOAC Pilot, and often invited me to the BA flight simulators at Heathrow on his return from the NI enquiry!!
Great to see your dad there with Major, he must have done Military service like me before the Police looking at his medals.