The film industry comprises companies that make movies and distribute them. In the UK there are over 400 registered film companies, with around 43% involved in production, 13% in distribution, and 44% in exhibition. The UK film industry contributed over £4 billion to the economy in 2007. Major film studios include Warner Bros and Universal Studios. Warner Bros is owned by Time Warner and had over £9 billion in revenue in 2012. Universal Studios is owned by Comcast through its NBCUniversal subsidiary and had revenue of £2.3 billion. Comcast has significant ownership of media companies and is the largest media company worldwide with over £47 billion in revenue.