UFO (1970–1973)
2 user

Computer Affair 

Three Interceptors are sent to frustrate a UFO attack but one collides with the UFO, killing the pilot, Ken Matthews. Lieutenant Gay Ellis was giving the pilots their instructions and ... See full summary »


David Lane (as Dave Lane)


Gerry Anderson (format), Sylvia Anderson (format) | 2 more credits »




Episode cast overview, first billed only:
Gabrielle Drake ... Lt. Ellis
George Sewell ... Col. Freeman
Dolores Mantez ... Nina Barry
Antonia Ellis ... Joan Harrington
Gary Myers Gary Myers ... Lew Waterman
Harry Baird ... Lt. Bradley
Michael Mundell Michael Mundell ... Ken Matthews
Ed Bishop ... Cmdr. Straker (as Edward Bishop)
Peter Gordeno Peter Gordeno ... Capt. Carlin
Nigel Lambert Nigel Lambert ... Moonbase Operative
Keith Alexander Keith Alexander ... Shado Radio Operator
Jeremy Wilkin Jeremy Wilkin ... Skydiver Navigator
Jon Kelley Jon Kelley ... Skydiver Engineer
Georgina Moon Georgina Moon ... Skydiver Operative
Maxwell Shaw Maxwell Shaw ... Dr. Shroeder


Three Interceptors are sent to frustrate a UFO attack but one collides with the UFO, killing the pilot, Ken Matthews. Lieutenant Gay Ellis was giving the pilots their instructions and Straker suspects she sacrificed Matthews to spare another pilot, Mark Bradley, her apparent lover. Psychological tests on Gay and Mark, as processed by a computer, confirm that they are in love but both deny it. When an alien lands on Earth, Gay sends Mark to capture it, to prove that she is impartial and prepared to risk his life. He comes through and goes on a date with her. Straker tells them that if Gay had followed official SHADO protocol all three pilots would have been killed. Written by don @ minifie-1

Plot Summary | Add Synopsis


Action | Sci-Fi


TV-PG | See all certifications »






Release Date:

15 May 1971 (UK) See more »

Company Credits

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Technical Specs


| (DVD)

Sound Mix:




Aspect Ratio:

1.33 : 1
See full technical specs »

Did You Know?


Although aired near to the end of the series' original run, this was the second episode made and should be viewed as such. See more »


There is no sound effect when Captain Carlin pulls back the control stick to launch sky-diver. See more »


Edited into Invasion: UFO (1974) See more »


UFO: Theme from the Gerry Anderson Television Series
Written by Barry Gray
See more »

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User Reviews

Computer Affair
19 July 2019 | by Prismark10See all my reviews

The episode speculates on cold judgment, devoid of emotions.

When an alien is captured, Colonel Freeman is uneasy about Commander Straker's methods to find information from the alien. Freeman regards Straker as cold, calculating like a computer.

By the same token when one of three Interceptors is destroyed in an encounter with the UFO. A computer when analysing the data thinks that Lieutenant Gay Ellis (Gabrielle Drake) did not want to put one of the other pilots, Mark Bradley in danger as they are an item.

The episode flirts with an interracial romance between Ellis and Bradley. We even see a scene where Ellis is without her purple hair. It led me to think why the women on the moon had purple hair wigs in the first place.

Although this was the second episode shot, it was relegated to be shown later on in the series. The story really was lethargic and limp despite some good production values. It really would had sent viewing figures spiraling downwards if was broadcast after the first episode.

One thing that swerved Gerry Anderson's glimpse of the future was the smoking ban on the workplace. It just looks odd with so many characters smoking when they are supposed to be working. It is political correctness gone mad that you cannot give your colleague secondary cancer!

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