Thanks Andy, Karl and Evan.
I'm not totally certain, but I think the Spartan is from Spartan Aircraft, Canada,. Certainly nice looking aircraft for the time.
Andy, I only recently found the 'Exposure Compensation' on my Nikon, after browsing through the manual on CD ! The Canon will have something similar, and the button is probably the same - a '+'/'-' symbol, in a black and white square box, the colours divided diagonally.
And on to the Mustang.
Due to the layout of the display line, I hadn't even realised this was actually on the airfield, until it took off!
Had I known, I would have tried to get within range and taken some ground shots. I think I'm right in stating that the owner has two Mustangs, as well as other stuff!
Coincidentally, it bears the markings of the 339th Fighter Group, 8th USAAF, based at Fowlmere, and our camp site for the weekend was on the edge of the former Fowlmere airfield, part of which is still in use for light aviation and gliding.
It's taking far too long to load pics at the moment, so I'll post more tomorrow, with the 'Flying Circus' and the Fiesler Storch.