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)
On the website shadolibrary.org, Deborah Rorabaugh creates a timeline of events chronologically using a few known dates and facts. For example, Exposed should come before all other episodes featuring Paul Foster, and there are a few definitive dates given (two newspaper dates, a death and script date) so with other clues, it is possible to form a good correlation UFO Episode Timing.A number of episodes were edited together in the early 1970s to form the feature-length compilation films Kill Straker, a Question of Priorities (1973; formed, in order of appearance, by "Confetti Check A-Ok", "Flight Path" and "A Question of Priorities") and Invasion: UFO (1974; mainly formed by "Identified", "Computer Affair", "Reflections in the Water", with ending from "The Man Who Came Back" and segments from "E.S.P." and "Confetti Check A-Ok" used to bridge continuity gaps).