This is interesting. With anything like this, I worry that it will become a cliched CGI mess, but it has potential with Ridley at the helm. There are certainly enough Spitfires and Hurricanes flying in the UK to allow plenty of practical scenes, the German aircraft will be more of an issue however, I believe the last airworthy HE.111 crashed unfortunately. The several flying Bunchons look enough like ME.109's to fool most people, they are basically the same aircraft built under license in Spain and with a different engine. Although the anoracks won't be happy