UFO (TV series)
A single season of 26 episodes (including the pilot) was filmed over the course of more than a year; a five-month production break was caused by the closure of MGM-British Studios in Borehamwood, where the show was initially made. Production then moved to Pinewood Studios in Buckinghamshire. "UFO" was first broadcast in the UK and Canada in 1970, and in US syndication over the next two years.
UFO (TV series)
The Andersons' live-action science fiction movie, "Doppelgänger" (also known as "Journey to the Far Side of the Sun") is considered an immediate precursor to "UFO", which was their first live-action TV series. The series featured actors, costumes, props, locations and music that had appeared in the film, and eleven cast members of the film appeared in at least one episode of "UFO".