Folland Gnat HD Gnat Display Team Koksijde 2005 and Duxford The Folland Gnat is a British compact swept-wing subsonic fighter aircraft that was developed and produced by Folland Aircraft. In the United Kingdom, the Gnat became well known due to its prominent use as the display aircraft of the RAF's Red Arrows aerobatic team Introduction 1959 (RAF) Retired 1979 (RAF)