Ah, but in my aquadome, my cats and I have a cunning plan for a very different Hawker fighter with different usage.Using American is no problem. Unless it's a P-38 or P-39...errr ok relying on America is a problem!
Asking the British aviation industry to build a 350mph fighter is not going to be an easy task if a speciation was sent in 1936 or 37. The Hawker fighters are due and 2,000bhp is the cheese. And even if there is new designs out there what stopping them been hot garbage anyways.
So it's going to be Hurricanes all the way. With P-40 to bulk the numbers. Is this a bad thing? In some theatres that would be plenty. UK is no longer under threat of invasion after Barbarossa so Sopwith Camels would be enough.
The Hawker fighters will eventually appear and the USAAC will bring the thunder so no Spitfire is not fatal.
Not saying chasing Me 109F in a Hurricane is easy but it can be done.