to the making of harry potter studio tour warner bros. studios leavesden is an 80 hectare studio complex in leavesden in southeastern 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 . warner bros. studios leavesden is one of only a few places in the united kingdom where large scale film productions can be made . the studios contain approximately 50 000 m2 538 196 sq ft of flexible space which includes 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 32 hectare 79 acre backlot which offers a 180 degree uninterrupted horizon favourable 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 . 1 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 all whilst the site maintains a secure studio space within the same complex . contents 1 history 1.1 leavesden aerodrome 1.2 leavesden studios 1.3 harry potter 1.4 warner bros. 1.5 royal opening 2 productions 3 studio tour 3.1 creation 3.2 reception 3.3 expansions 4 see also 5 references 6 external links history edit leavesden aerodrome edit leavesden aerodrome iata none icao egti summary airport type airfield & factory closed owner de havilland aircraft company c1940 1960 hawker siddeley 1960 1977 rolls royce holdings 1977 closure location leavesden abbots langley hertfordshire uk in use 8th december 1941 31st march 1994 elevation amsl 335 ft 102 m coordinates 51 41 24 n 0 25 08 w 51.69000 n 0.41889 w 51.69000 ; 0.41889 map leavesden aerodrome location within hertfordshire leavesden aerodrome was a british airfield created in 1940 by the de havilland aircraft company & the air ministry in the tiny village of leavesden between watford and abbots langley in hertfordshire . construction began in 1940 after the outbreak of world war ii . the de havilland company who were based in nearby hatfield entered into a contract with the air ministry to produce what would become known as the mosquito fighter craft . space for the large scale hangars needed to produce the huge number of airplanes required was not available at de havilland s hatfield aerodrome . so the ministry of supply requisitioned this new site in leavesden which was an empty plot of land at the time from the watford corporation and it was developed into the complex that it is today . the construction was enormously expensive so part of the site was leased to the london aircraft production group & the second aircraft group . ultimately these leases were used by handley page another hertfordshire based airplane manufacturer under contract with the air ministry to produce the halifax bomber . as a result by the end of the war leavesden airfield was by volume the largest factory in the world . 2 the two planes were both critical successes for britain during the conflict . due to the high priority placed on aircraft production large numbers of workers were drafted with little experience or training in aircraft production with over half the workforce eventually being female . as part of constructing the aircraft factory an airstrip was created first so the planes could be tested and later to deliver the craft to their final destinations . the runway and control tower still remain to this day even after two major renovations in an effort to preserve the site s history . the runway is now the main road through the complex and the tower is currently an observation lounge . after the war the aerodrome was purchased outright by de havilland who themselves had a succession of owners in the following decades including hawker siddeley but ultimately they and the site were acquired by rolls royce who used it as a factory for producing engines for airplanes and later helicopters . it was also used by commercial small business aircraft as the field is close to both the m1 & m25 motorways . however by the early 1990s britain s manufacturing industry was in decline and rolls royce had sold their interests in the site . unable to find a new owner by 1994 leavesden aerodrome was left disused and all but anbandoned . 3 gringotts wizarding bank diagon alley film set file leavesden studios geograph.org.uk 71811.jpg the old leavesden studios sign in 2005 leavesden studios edit in 1994 eon productions james bond film goldeneye was to be the next film in the series after an unusually long six year break . pinewood studios their traditional home studio was fully booked with other productions not being prepared for the series unexpected return . facing little time to find a space in which they could build the number of large scale sets required the production discovered the unoccupied leavesden . the wide tall and open aircraft hangars were uniquely well suited to conversion into film stages . eon leased the site for the duration of their shoot and went about gutting the factories turning them into stages workshops and offices in short a working film studio . 4 this process is shown on the 2006 dvd s special features . members of the production crew impressed by the enormous size of the filmmaking complex they suddenly had to themselves jokingly called leavesden cubbywood after eon s long serving producer albert r. cubby broccoli . 5 leavesden studios as the site was rebranded by its owners quickly became popular after goldeneye wrapped . a succession of major feature films made use of the site including the first of the star wars prequels the phantom menace and tim burton s sleepy hollow . harry potter edit by the year 2000 heyday films had acquired use of the site on behalf of warner bros. for what would be the first in a series of films harry potter and the philosopher s stone . 6 every one of the harry potter films was based out of leavesden studios over the following ten years . while other productions almost exclusively other warner bros. productions made partial use of the studios the site was mostly occupied by harry potter s permanent standing sets . indeed some films such as sherlock holmes & sweeney todd the demon barber of fleet street actually made use of some of the harry potter sets since they were sufficiently appropriate for their victorian setting and tone . during this time however it was noted that there were some ways in which the site s facilities might be improved . none of the stages were adequately soundproofed and the ww2 era ceilings had a tendency to leak during rainy weather . film set of the great hall hogwarts at warner bros. studio tour london loosely inspired by the hall of christ church oxford 7 8 one of the more noticeable exterior sets constructed on the leavesden backlot outdoors was a row of ten houses five per side along a street which was created for the harry potter series to represent privet drive . 9 on 21 march 2010 there was a fire on one of the hogwarts sets during harry potter and the deathly hallows part 2 at leavesden studios . not much of the set was badly damaged . 10 in 2010 as the eighth and final harry potter film was nearing completion warner bros. announced their intention to purchase the studio as a permanent european base the first studio to do so since metro goldwyn mayer in the 1940s . 11 warner bros. edit by november 2010 warner bros. completed its purchase of leavesden studios and announced plans to invest more than 100m into the site they had occupied for over ten years rebranding it warner bros. studios leavesden . the studios make warner bros. the only hollywood film studio with a permanent base in the united kingdom . the triple decker knight bus used in the harry potter film series much of the redevelopment involved converting stages a through h into sound stages and equipping all the facilities with the latest fittings a production might require . the refurbished stages were retrofits of the original buildings and the runway and control tower from the site s days as an aerodrome remain intact as well as all of the buildings original structures . the full scale refurbishment and renovation of the production facilities were completed and the studios reopened to film and television work in 2012 . 12 13 as part of this redevelopment warner bros. also created two entirely new soundstages j & k to house a permanent public exhibition called the warner bros. studio tour london the making of harry potter creating 300 new jobs in the local area . 14 currently the whole attraction is dedicated to the making of harry potter and is now home to many of the series most iconic sets props and costumes . it was opened to the public in early 2012 . the first film to start shooting at the newly refurbished studios was edge of tomorrow . 15 though the studios are now privately owned the shooting spaces are available to rent for any production . on june 30 2014 warner bros. announced the expansion of the studio building three new state of the art stages and adding a further 100 000 square feet of office space . the announcements were made after a reception celebrating the creative industries hosted by pm david cameron and attended by wb s ceo kevin tsujihara and wb uk s md josh berger . 16 leavesden s trio of new sound stages consist of one 35 000 square foot building and two 17 000 square foot buildings along with 20 000 square feet of adjacent office space which were completed by the end of 2014 . on the same day the filming of live action the legend of tarzan got underway at the studio . 17 following the refurbishments the studios are now one of the largest and most state of the art secure filmmaking facilities in the world . 1 royal opening edit almost twenty years after the complex was converted from aerodrome to film studios and over a year since the completion of work on the newly refurbished studios the site was officially opened by the duke and duchess of cambridge on 26 april 2013 . 18 on their visit they were accompanied by the duke s brother prince harry and j. k. rowling who had been unable to attend the tour s grand opening the year before amongst other guests . several hundred beneficiaries of supported charities were given invitations to the studio tour on the day of the visit . the royal entourage visited both the tour and the studios viewing the props and costumes from christopher nolan s batman films before conducting the site s inauguration . 19 20 productions edit films that have made use of the facilities include 21 goldeneye 1995 mortal kombat annihilation 1997 star wars episode i the phantom menace 1999 sleepy hollow 1999 onegin 1999 an ideal husband 1999 22 harry potter and the philosopher s stone 2001 harry potter and the chamber of secrets 2002 harry potter and the prisoner of azkaban 2004 harry potter and the goblet of fire 2005