M.S.406? Hmm, even looks a bit like the Hurri, but I don't mean to burst your collective bubbles, but there is no way the Air Ministry would have contemplated buying, let alone building a French design. Dowding and Churchill would be rolling in their graves with laughter!
The Mustang was built to a British requirement, not to a British specification. The British Purchasing Commission approached NAA to build P-40s under licence, so NAA designed and built the Mustang using private funding after messing about with ideas on their own initiative - and happened to design one of the best fighters of the war!
Was it really a British spec or a North American design with the specification retrospectively written around a private initiative?
The Mustang was built to a British requirement, not to a British specification. The British Purchasing Commission approached NAA to build P-40s under licence, so NAA designed and built the Mustang using private funding after messing about with ideas on their own initiative - and happened to design one of the best fighters of the war!