Warner Bros. Studios, Leavesden is an 80 ha (200 acres) studio complex in Leavesden in Hertfordshire, in southeast England. Formerly known as Leavesden Film Studios and still colloquially known as Leavesden Studios or simply Leavesden, it is a film and media complex owned by Warner Bros. The studios were all converted from 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.
Warner Bros. Studios, Leavesden is one of only a few places in the UK where large-scale film productions can be made. The studios contain a stage space, one of the largest filtered and heated stage-based water tanks in Europe, production office space, workshops and support buildings, along with an extensive backlot which offers a 180-degree uninterrupted horizon, favorable for exterior sets. Following an over £110m refurbishment by Warner Bros. the studios are now one of the largest and most state-of-the-art secure filmmaking facilities in the world.
Though the studios are owned by Warner Bros., all of the studio facilities are available to rent for any production. Since acquiring the site Warner Bros. has opened a public attraction called Warner Bros. Studio Tour London – The Making of Harry Potter, which receives over 6,000 visitors a day at peak times all whilst the site maintains a secure studio space within the same complex.