 Up to 1912 the Green D.4 was the only all-British aircraft engine capable of producing 60 hp, so when prizes were offered for flights or races for all-British aircraft, the Green was the only choice.The best known example is that of Moore-Brabazon in his Short Biplane No.2, winning the £1,000 "Daily Mail" prize in 1910 for a circular 1 mile flight by a British pilot in an all-British aeroplane.