The Making Of Harry Potter Studio Tour, Warner Bros. Studios, Leavesden, London, England, United Kingdom

Warner Bros. Studios, Leavesden (formally known as Leavesden Film Studios; colloquially Leavesden Studios or simply Leavesden), is a film and media complex owned by Warner Bros.. The studios and backlot sit on the site of the former Rolls-Royce factory at Leavesden Aerodrome, which was an important centre of aircraft production during World War II. It is situated in west Hertfordshire approximately 18 miles (29 km) northwest of central London, just north of Watford.
Warner Bros. Studios, Leavesden, is one of only a few places in the U.K. where large scale productions can be made. The studios contain approximately 500,000 sq ft (50,000 m2) of flexible space which includes stage space, production office space and support buildings, along with an extensive 80-acre (320,000 m2) backlot which offers a 180 degree uninterrupted horizon, favourable for exterior sets.