Memphis Belle
I think you'll find it was William Wyler, not Howard Hawkes, who directed the original documentary Memphis Belle, the ground sequences of which were shot at Bassingbourn. His daughter, whose name I forget, made the 1980s re-make, with Harry Connick in the lead.
As another reasonable one to consider, how about Jan Sverak's Dark Blue World, about Czech pilots who escape to the UK and fly Spitfires of slightly anachronistic mark numbers in the Battle of Britain?