Well, this model doesn't qualify, because it was about 80% built before the GB started. But I thought I would post it here because it's my first non-military model in about 40 years, and maybe it'll be some inspiration or enjoyment for others.
This is the Fiat G.9 designed by Guiseppe Gabrielli as a sports/aerobatic plane. The G.9 first flew in 1938 and was available in single-seat and two-seat form. Shown here is the single-seat version flown by noted aerobatic pilot Giancarlo Volonte. Volonte only was able to fly the aircraft for a few months before all civilian flying was halted as a result of the war. Volonte was later killed when he was shot down during an attack on Malta, while he G.9 was impressed for liaison duties with the Regia Aeronatica.
The model started out as a 1/72 Airfix P-51D. The engine is from a Ford Trimotor, the prop from the spares box (unknown origin). The landing gear trousers were scratch-built using the (should-be) patented Brian de Basher method (thanks Brian - brilliant!) and the windshield and cockpit area decking were also scratch-built. Everything else came from the P-51 kit. The reason I made it Italian is that the only yellow decals I had that I could make a civil registration out of included an "I." Duh - I just realized I COULD have made "CF" for Canada - oh well.