The BEST Episodes of UFO

Every episode ever - ranked by fan votes!

Last Updated: Sep 21, 2021

Network: ITV1

Around 1970, the British and American governments receive incontrovertible evidence that aliens exist and are abducting humans. In cooperation with the United Nations, they set up a secret worldwide organization, SHADO (Supreme Headquarters Alien Defence Organisation), which operates in the 1980s. With resources and equipment under the seas, in the air, on land, in orbit and on the Moon, SHADO's purpose is to stop the alien incursions and find out why the aliens want humans.

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#1 - Sub-Smash

Season 1 - Episode 8 - Aired Nov 11, 1970

Suspecting a UFO to be responsible for the sinking of a freighter, Straker, Foster and Nina Barry investigate in Skydiver. Attacked by an undersea UFO, the submarine is downed on a ledge on the sea bed and the crew are trapped. While Straker fights against his claustrophobia, Nina faces a living nightmare.

star 8.65
62 votes
Directors: David Lane
Writers: Alan Fennell

#2 - Mindbender

Season 1 - Episode 14 - Aired Jan 13, 1971

After a UFO inexplicably destroys itself less than two miles from Moonbase, a mysterious crystal rock is recovered, causes the person in its vicinity to hallucinate. The rock is eventually transferred to Straker's office, where he hallucinates that SHADO is simply a set for a TV series, he is an actor named Mr. Burns, Moonbase can be reached by stepping through two doors from the main control room at SHADO HQ, and 'Mr. Straker' is not available.

star 8.39
106 votes
Directors: Ken Turner
Writers: Tony Barwick
The Square Triangle

#3 - The Square Triangle

Season 1 - Episode 10 - Aired Dec 9, 1970

In the woods between Clare Cross and Lingbury, an injured alien stumbles into a lonely cottage and is shot down by Liz Newton and her lover Cass Fowler. Liz and Cass are taken to SHADO HQ for questioning, but when Liz's husband arrives at the cottage, Paul Foster realises that the alien's death was no accident.

star 8.22
79 votes
Directors: David Lane
Writers: Alan Pattillo
The Long Sleep

#4 - The Long Sleep

Season 1 - Episode 26 - Aired Mar 15, 1973

A woman awakens from a 10-year coma and begins telling the tale about her encounter with aliens while she and her boyfriend were high on drugs.

star 8.21
76 votes
Directors: Cyril Frankel
Writers: David Tomblin
The Sound of Silence

#5 - The Sound of Silence

Season 1 - Episode 23 - Aired Jul 17, 1971

A UFO hides in a lake on a country estate of a well-known equestrian, who has since disappeared. When SHADO tracks down the UFO and manages to destroy it, it breaks up and leaves a strange item floating in the lake.

star 8.17
80 votes
Directors: David Lane
Writers: Bob Bell, David Lane

#6 - Timelash

Season 1 - Episode 18 - Aired Feb 17, 1971

While picking up Lt. Lake at the airport, Straker and Lake find that time has been frozen except for them. Sawdust hangs in mid-air, Lt. Ellis is frozen mid-word on a view screen, and one man is taunting them, apparently working for the aliens.

star 8.17
76 votes
Directors: Cyril Frankel
Writers: Terence Feely
Court Martial

#7 - Court Martial

Season 1 - Episode 20 - Aired May 1, 1971

Foster is suspected of being a security leak but, during the trial, Straker learns that Foster's apartment was bugged.

star 8.15
78 votes
Directors: Ron Appleton
Writers: Tony Barwick
Kill Straker!

#8 - Kill Straker!

Season 1 - Episode 7 - Aired Nov 4, 1970

When a Lunar Module is attacked by a UFO, Straker makes a split-second decision that endangers the astronauts, but ultimately saves them. Later, he is surprised to find his authority being questioned by his most loyal officer, Colonel Paul Foster, who spearheads a campaign against him. Then an attempt is made on Straker's life...

star 8.13
79 votes
Directors: Alan Perry
Writers: Donald James

#9 - Conflict

Season 1 - Episode 4 - Aired Oct 7, 1970

When an Alien Limpet UFO causes the destruction of Lunar Module 32, Straker demands a clean-up programme by the International Astrophysical Commission (IAC) to remove hazardous space debris from Earth orbit. But Straker finds himself butting heads with the IAC chairman, who wants a complete shut-down of SHADO operations.

star 8.12
125 votes
Directors: Ken Truner
Writers: Ruric Powell
Reflections in the Water

#10 - Reflections in the Water

Season 1 - Episode 24 - Aired Jul 24, 1971

A mysterious dome is found under the sea, inside of which SHADO finds duplicates of their HQ personnel who are using non-alien technology to spoof SHADO's instructions to Moonbase and Skydiver.

star 8.11
105 votes
Directors: David Tomblin
Writers: David Tomblin
Confetti Check A-O.K.

#11 - Confetti Check A-O.K.

Season 1 - Episode 22 - Aired Jul 10, 1971

Straker recalls his marriage, and the stormy days that followed as he worked covertly to get SHADO up and running and recruited personnel.

star 8.10
78 votes
Directors: David Lane
Writers: Tony Barwick

#12 - Survival

Season 1 - Episode 13 - Aired Jan 6, 1971

Foster, with his radio knocked out and his oxygen line cut, is presumed lost during a confrontation with a UFO on the moon's surface. Foster is found by an alien, and they develop a bond when the alien attempts make-shift repairs on Foster's suit.

star 8.09
104 votes
Directors: Alan Perry
Writers: Tony Barwick

#13 - E.S.P.

Season 1 - Episode 6 - Aired Oct 21, 1970

John Croxley's talent for extra sensory perception is heightened after his wife is killed when a UFO crashes into their house. With his mind under the influence of the Aliens, Croxley learns the secrets of SHADO and lures Straker and Freeman to the remains of his house - to kill them!

star 8.03
93 votes
Directors: Ken Turner
Writers: Alan Fennell
The Responsibility Seat

#14 - The Responsibility Seat

Season 1 - Episode 25 - Aired Mar 8, 1973

Freeman takes over temporarily while Straker deals with a woman apparently determined to investigate what SHADO is all about.

star 7.95
105 votes
Directors: Alan Perry
Writers: Tony Barwick
The Psychobombs

#15 - The Psychobombs

Season 1 - Episode 12 - Aired Dec 30, 1970

A UFO imbues three young people with incredible powers. One blows up a radar station. The second steals fingerprints and tries to get aboard a Skydiver sub, blowing it up. The third, a woman, tries to blow up SHADO HQ.

star 7.90
105 votes
Directors: Jeremy Summers
Writers: Tony Barwick
Computer Affair

#16 - Computer Affair

Season 1 - Episode 21 - Aired May 15, 1971

After a pilot is killed when Moonbase operatives fail to give him course change information, the personnel are recalled to Earth for an investigation. A UFO crashes in northern Canada and the same personnel are assigned to the operation to find the UFO.

star 7.89
106 votes
Directors: David Lane
Writers: Tony Barwick

#17 - Identified

Season 1 - Episode 1 - Aired Sep 16, 1970

SHADO engages in its first battle with the enemy. Sky One cripples an alien ship which crash-lands in a lake. Straker's team capture its pilot, a strange blue-skinned humanoid - and the grim secret behind the aliens' are revealed.

star 7.83
293 votes
Directors: Gerry Anderson
Writers: Gerry Anderson, Reg Hill, Sylvia Anderson, Tony Barwick
Flight Path

#18 - Flight Path

Season 1 - Episode 15 - Aired Jan 20, 1971

A SHADO technician, being blackmailed for information by an unknown party, is caught by Freeman, but not before the information is passed. The technician divulges to SHADO the information he gave to the blackmailers and, after much work on the encrypted data, they discover it is part of a plan by the aliens to attack the Moonbase undetected.

star 7.80
106 votes
Directors: Ken Turner
Writers: Ian Scott Stewart

#19 - Destruction

Season 1 - Episode 9 - Aired Dec 2, 1970

A Naval vessel shoots down a UFO in the Atlantic, but the Admiralty rejects further investigation into the incident. Straker suspects a cover up and wants to know why, so Foster courts Admiral Sheringham's secretary, Sarah Bosanquet. What they discover could mean the end of all life on Earth.

star 7.74
145 votes
Directors: Ken Turner
Writers: Dennis Spooner
A Question of Priorities

#20 - A Question of Priorities

Season 1 - Episode 5 - Aired Oct 14, 1970

"Important? What can be more important than your own son's life?" Straker faces the toughest decision of his career when his son is critically injured in an accident. The drug that can save his life can only be ferried from New York in time aboard a SHADO transporter - the same transporter that is in the prime position to track an Alien defector on the West Coast of Ireland

star 7.69
124 votes
Directors: David Lane
Writers: Tony Barwick

#21 - Exposed

Season 1 - Episode 2 - Aired Sep 23, 1970

An XV-104 test plane wanders into a UFO target area and the pilot, Paul Foster, makes sightings of both the UFO and Sky One. Angry and frustrated that no one believes his story, Foster suspects a cover-up and decides to conduct his own investigation into the activities of ex-USAF Colonel Ed Straker.

star 7.65
216 votes
Directors: David Lane
Writers: Тони Бэрвик
The Cat with Ten Lives

#22 - The Cat with Ten Lives

Season 1 - Episode 3 - Aired Sep 30, 1970

The body of an Alien, recovered after a UFO attack on Moonbase, reveals some startling new evidence which overturns all SHADO's previous theories about the Aliens. For Interceptor pilot Jim Regan, the news has tragic consequences as he becomes possessed by the mind of an Alien held in the body of a Siamese cat!

star 7.64
108 votes
Directors: David Tomblin
Writers: David Tomblin
The Man Who Came Back

#23 - The Man Who Came Back

Season 1 - Episode 16 - Aired Feb 3, 1971

Reported missing and presumed dead after a UFO incident which has left SID disabled, astronaut Craig Collins turns up alive and well. But as an operation to complete repair work on SID is planned, Colonel Lake and Colonel Grey discover that Collins is not the man he used to be.

star 7.64
103 votes
Directors: David Lane
Writers: Terence Feely
The Dalotek Affair

#24 - The Dalotek Affair

Season 1 - Episode 17 - Aired Feb 10, 1971

Two members of SHADO dining at a restaurant, see a diner who was part of Dalotek, a moon-based, private company which discovered an alien device that disrupted Communications between Moonbase and SHADO on Earth.

star 7.46
138 votes
Directors: Alan Perry
Writers: Ruric Powell
Close Up

#25 - Close Up

Season 1 - Episode 11 - Aired Dec 16, 1970

Straker gets approval from above to build a probe with a camera that will track a UFO back to its home planet.

star 7.45
113 votes
Directors: Alan Perry
Writers: Tony Barwick