Nash & Thompson was a British engineering firm that developed and produced hydraulically operated gun turrets for aircraft.Initially other companies such as Vickers and Handley Page took FN control units for fitting in their own turret designs.[4] The importance of Parnall at Yate to British was such that two bomb attacks by Lutwaffe were made on it, the first on 27 February 1941 by KG27's most experienced crew which resulted in 46 deaths and loss of production drawings.At the end of the war, under the chairmanship of the Earl of Limerick Parnall left the aircraft industry reducing to 1,000 employees at Yate.All were powered hydraulically and carried 0.303-inch (7.7 mm) Vickers K or Browning machine guns, except where noted.
FN-5 2-gun nose turret on a Lancaster
FN 121 turret incorporating the
Village Inn
system, as fitted on a Lancaster.