Thanks for the replies.
There was quite a list of buyers for the Spitfire and Hurricane before the war. I have not come accross any data regarding Soviet import but I would not be surprised either. The Soviet Union did import quite a number of German aircraft in the 1930s, and a few Italian ones as well (Breda).
Very interesting. The link is not working though, I would love to read more on this. Japan also imported Italian bombers which were used against the Soviets.