Soho is a centre of the independent film and video industry as well as the television and film post-production industry. Audio post duo White Lightning (Robbie Weston and Rick Dzendzera) opened two audio post facilities in different parts of Soho in 1986: Silk Sound at 13 Berwick Street, and The Bridge Facilities at 55-57 Great Marlborough Street. Silk Sound is still in operation, but The Bridge was sold to Miloco Studios in 2009, and relocated to the Orinoco Complex at 36 Leroy Street in Greater London. White Lightning also opened a third studio at 16 Dufours Place, called Space Facilities, in late 1995, but it closed the same year The Bridge was sold. Twentieth Century House in Soho Square was built in 1937 for Twentieth Century Fox. The British Board of Film Classification, formerly known as the British Board of Film Censors, has been based in the square since 1950. Soho's key fibre communications network has been managed by Sohonet since 1995, which connects the Soho media and post-production community to British film studios such as Pinewood and Shepperton, along with other locations worldwide include HBO and Warner Brothers. In the 2010s, research commissioned by Westminster City Council showed 23 per cent of the workforce in Soho works in the creative industries.