Ealing Studios is a television and film production company and facilities provider at Ealing Green in West London. Will Barker bought the White Lodge on Ealing Green in 1902 as a base for film making, and films have been made on the site ever since. It is the oldest continuously working studio facility for film production in the world, and the current stages were opened for the use of sound in 1931.
Ealing is best known for a series of classic films produced in the post-WWII years, including Kind Hearts and Coronets (1949), Passport to Pimlico (1949), The Lavender Hill Mob (1951), and The Ladykillers (1955). The BBC owned and filmed at the Studios for forty years from 1955 until 1995.
Since 2000, Ealing Studios has resumed releasing films under its own name, including the revived St Trinian’s franchise. In more recent times, films shot here include The Importance of Being Earnest (2002) and Shaun of the Dead (2004), as well as The Theory of Everything (2014), The Imitation Game (2014), Burnt (2015) and Devs (miniseries) (2020). Interior scenes of the British period drama television series Downton Abbey were shot in Stage 2 of the studios. The Met Film School London operates on the site.
According to Wikipedia