That was a bit of mild guesswork on my part. Much of the Skyranger "big bits" manufacturing is actually done in the Ukraine, but the design and so far as I know kit preparation and some of the manufacture is done in France, so I put it down as French.
Reality I know do a great deal of preparation, and virtually all of the design in the UK, and are also in the process of bringing most of the production now done in the USA to Britain. So, I put them down as British.
Arguably you could put both down as 50/50; so far as my league table is concerned the only real effect would be to move the Ukraine up a couple of places and France down a couple so that both would sit roughly between Germany and Cz.
No such thing as exact science is there
G