Just to confirm that it is definitely Panshanger - at great personal expense - well £6.75 on ebay - I bought the excellent little book about Panshanger by Michael Packham which confirmed the Clubhouse/Control Tower being at Panshanger.The Hybrid (size) T2 Hangar was built in 1959/60 and initially used by Airwork for assembling Cessnas.
Apparently the T2 was new build which was a bit of a surprise given how scruffy it looked by 1979 - maybe they did not use much paint
This pic below taken by John Sexton in 1963
