Thanks BEagle - yes, I was aware of the vast majority of the ones you list. (Indeed I had rather a nice view of Broadwell several times sitting in the back of a Merlin doing radar approaches to Brize - there are some consolations to working with cadets :-) )
Never managed to find Kelmscot, though, from the air or on the ground. (I know where the village is... where's the airfield?)
Tim