I remember him well, from Ops at Finningley.
I, also a young callow SAC assistant at the time, took a phone call from a very angry Gp Capt Sir Douglas Bader who was fuming that he had been refused permission to fly into the 1976 B of B Open Day. He wanted to arrive at the mid point of the Flying Display. His call came two days before the event
MNav Lennard took over the call and, with me listening in, gave a lesson in the art of diplomacy.
A lesson I learned well.
My regards and best wishes to him.