Celador is a British film production company founded in 1983 that produces films, television shows, and radio content. It started as an independent company but was later owned by Complete Communications before Celador bought itself back. Celador is known for popular productions like Who Wants to be a Millionaire? and Slumdog Millionaire. As a small production house, it relies on freelance workers and partnerships with other companies to fund projects. While relatively small compared to Hollywood studios, some of Celador's films have found commercial success internationally.