MGM is an American media company involved in film and television production and distribution, with the motto "Art for art's sake." It was founded in the 1920s by Marcus Loew and Louis B. Mayer and is known for its iconic logo featuring the roaring lion. Celador is a British independent production company formed in 1983 that owns UK radio stations and has produced films such as Slumdog Millionaire and television shows such as Who Wants to Be a Millionaire?.