Bill Purchase was the Boss of 7 AEF when it was Chipmunks at Newton. Iain Torrance was the Boss of East Midlands UAS at the same time. Circa 1995-96. Iain was a previous Nimrod pilot.
The other gents ran the contracted civilian ground engineering and line support I think but their full names are escaping me for now.
7 AEF/EMUAS are now at RAF Cranwell and may have some history they can provide on that period and aircraft.