Blériot Aéronautique was a French aircraft manufacturer founded by Louis Blériot. It also made a few cyclecars from 1921 to 1922. After Louis Blériot became famous for being the first to fly over the English Channel in 1909 he established an aircraft manufacturing company. This company really took off during World War I and a British factory was established in Addlestone. The British factory made both Blériot and SPAD fighter planes during the war.