Question: What former aircraft factory and airfield was used to film the 2016 movie The Legend of Tarzan?
Context: Valtion lentokonetehdas (State aircraft factory) was a Finnish aircraft manufacturing company that was founded on 23 February 1928 from the IVL or I.V.L. factory (Ilmailuvoimien lentokonetehdas, Finnish Air Force Aircraft Factory). The Royal Aircraft Factory B.E.8 was a British two-seat single-engined general purpose biplane of the First World War, designed by John Kenworthy at the Royal Aircraft Factory in 1913.  Small numbers were used by the Royal Flying Corps over the Western Front in the first year of the war, with the type being used as a trainer until 1916. The Marinens Flyvebaatfabrikk M.F.7 was a two-seat biplane floatplane built by the Royal Norwegian Navy Air Service aircraft factory Marinens Flyvebaatfabrikk in 1923.  The M.F.7 was designed and employed as a trainer aircraft, and functioned as a temporary solution until a better aircraft was designed.  Soon after it entered service, the aircraft factory's experience with the M.F.7 led to the construction of the Marinens Flyvebaatfabrikk M.F.8, which remained in service as the main trainer aircraft of the Royal Norwegian Navy Air Service until the German invasion of Norway in 1940. The Naval Aircraft Factory (NAF) was established by the United States Navy in 1918 in Philadelphia, Pennsylvania.  It was created to help solve aircraft supply issues which faced the Navy Department upon the entry of the U.S. into World War I.  The US Army’s requirements for an enormous quantity of airplanes created a decided lack of interest among aircraft manufacturers in the Navy's requirements for a comparatively small quantity of aircraft.  The Navy Department concluded that it was necessary to build a Navy-owned aircraft factory in order to assure a part of its aircraft supply; to obtain cost data for the Department’s guidance in its dealings with private manufacturers; and to have under its own control a factory capable of producing experimental designs. The Legend of Tarzan is a 2016 American adventure film based on the fictional character created by Edgar Rice Burroughs.  Directed by David Yates, with a screenplay by Adam Cozad and Craig Brewer, the film stars Alexander Skarsgård as the title character, with Samuel L. Jackson, Margot Robbie, Djimon Hounsou, Jim Broadbent and Christoph Waltz in supporting roles.  Principal photography began on June 21, 2014, at Warner Bros.  Leavesden Studios in the United Kingdom, and wrapped four months later on October 3. Warner Bros.  Studios, Leavesden is an 80-hectare studio complex in Leavesden in Hertfordshire, in southeast England.  Formerly known as Leavesden Film Studios and still colloquially known Leavesden Studios or simply Leavesden, it is a film and media complex owned by Warner Bros. The studios and backlot were all retrofitted as the site's original purpose was as an aircraft factory and airfield called Leavesden Aerodrome, a centre of British aircraft production during World War II.  It is situated in Abbots Langley, near Watford, in southwest Hertfordshire. The Royal Aircraft Factory R.E.8 was a British two-seat biplane reconnaissance and bomber aircraft of the First World War designed at the Royal Aircraft Factory.  Intended as a replacement for the vulnerable B.E.2, the R.E.8 was widely regarded as more difficult to fly and gained a reputation in the Royal Flying Corps for being "unsafe" that was never entirely dispelled.  Although eventually it gave reasonably satisfactory service, it was never an outstanding combat aircraft.  In spite of this, the R.E.8 served as the standard British reconnaissance and artillery observation aircraft from mid-1917 to the end of the war, serving alongside the rather more popular Armstrong Whitworth F.K.8. The Royal Aircraft Factory F.E.4 was a twin-engine biplane aircraft built by the Royal Aircraft Factory in 1916.  Intended as a cannon armed ground-attack aircraft, it was unsuccessful, only two being built. The S.E.1 ("Santos Experimental") was an experimental aircraft built at the Army Balloon Factory at Farnborough (later the Royal Aircraft Factory) in 1911.  Its place in aviation history is mainly that it was the first in the series of Royal Aircraft Factory designs - several of which played an important role in World War I. The Royal Aircraft Factory F.E.1 was designed and built in 1910 by the pioneer designer Geoffrey de Havilland.  He used it to teach himself to fly during late 1910.  After De Havilland was appointed assistant designer and test pilot at Army Balloon Factory at Farnborough (later the Royal Aircraft Factory) in December 1910 the War Office bought the aircraft for £400.  the aircraft was given the designation F.E.1 ("Farman Experimental")
Answer: Leavesden Studios