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The Film Industry...
The major business centres of film making are the United States, Nigeria, Hong Kong and India, but because of high labour costs, many films tend to be filmed in countries such as the UK, Canada, Eastern Europe and Australia etc. The film industry is mass dominated by Hollywood and films that are American productions. The USA has the oldest film industry and possibly the largest in terms of revenue and Hollywood (Los Angles) is at the centre of the US film industry. However, four of the six major American film studios are owned by East Coast companies. Only the Walt Disney Company (which owns Walt Disney Pictures, Touchstone Pictures, Pixar Animation Studios and Marvel Studios) is fully based in southern California. Nestor Studios was the first movie studio founded in the Hollywood area in 1911, and in the same year another 15 Independents settled in Hollywood. Hollywood became so well known for the US film industry that the term Hollywood became used to refer to the US Film Industry. In the 1930's, the five major Hollywood movie studios (Paramount, RKO, 20th Century Fox, Metro-Goldwyn-Mayer and Warner Bros) each owned large theatres throughout the country for exhibition of their film productions.
http://en.wikipedia.org/wiki/Film_industry

In the UK, the film industry has many successful production companies including PolyGram Filmed Entertainment, Warp X, Working Title and Em Media. Working Title has had many successful UK production films including Paul, Four Weddings and a Funeral, Notting Hill and Love Actually whilst EM media has had successes with all three This is England Films and others. The UK also has the BFI (British Film Institute) a charitable organisation who work to encourage the development of the arts of film, television and the moving image throughout the United Kingdom, and runs the BFI Southbank and the IMAX Theatre, both located on the south bank of the River Thames in London. The IMAX has the largest cinema screen in the UK, and shows popular recent releases and short films showcasing its technology, which includes 3D screenings and 12,000 watts of digital surround sound. BFI Southbank shows films from all over the world particularly critically acclaimed historical & specialised films that may not otherwise get a cinema showing.

One of the earliest Thriller Films to have been released is The Lodger in 1926 which was directed by Alfred Hitchcock and was one of the many silent films released during that time. It was his third film to be released but was his first Thriller The more recently released Thriller films include Contagion, Inception, Seven, The Crazies, Salt and the Saw films.

http://mark-standforsomething.blogspot.com/2011/03/thriller-lodger-1926.html