B O B Film
After the film was released a paper back book appeared that covered why and how the film was made.
I have a copy somewhere but it should be possible to find a copy from ABEBOOKS.
The RAF provided a large number of pilots for the fighters (suitably tail wheel checked).
The Spanish airforce also provided pilots for the H111 and Bouchons,with some Americans who had bought some for themselves.
This really got the warbird movement going when it prooved possible to reactivate "gate guardians" for use.
The main problem (as usual) was the lack of flying Hurricanes, PZ865,and LF363 were there again (having already done Angels one five,and Reach for the sky)Also a Canadian built machine came across (and then went to Scotland).
The camera ship (Mitchell) languished at Biggin for years,and it would be good if someone put together an article on the organising and operating of the "fighter force",under the auspices of one "G Elliot" i think.
One of the "full size Hurricane copies" has recently come to Cornwall,it looks pretty realistic from 20 feet.
A bunch of full size Hurricane models were made for "burning",and you can see the plywood panels quite clearly once the fabric has burnt away.
Your quite correct that the English weather played its hand in disrupting filming and extra scenes had to be be reshot in Spain.
Must have been a wonderful time to see all those merlins being serviced again.
PC