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.
Timelash (UFO)
"Timelash" is the eighteenth episode aired of the first series of "UFO", a 1970 British television science fiction series about an alien invasion of Earth. The screenplay was written by Terence Feely and the director was Cyril Frankel. The episode was filmed from 24 July to 6 August 1970, and aired on ATV Midlands on 17 February 1971. Though shown as the eighteenth episode, it was actually the twenty-fourth to have been filmed.