The Time Lords permit the TARDIS to make its first voyage through Space and Time for the first time for more than a year.  The Master has stolen the Doomsday Machine file and it must be retrieved. The Time Lords dispatch the Doctor and Jo to a bleak Earth type planet in the year 2472, where they meet the Colonists, farmers who left Earth because of overcrowding. Since their arrival the Colonists have faced inexplicable crop failures. There are two other groups on the planet: the Primitives, the original inhabitants, who steal the TARDIS and imprison Jo in their underground city, the Earthmen from the Interplanetary Mining Corporation, who have come to exploit the rich mineral deposits. If successful, they would make the planet uninhabitable. The IMC have been demoralizing the Colonists with attacks by robot lizards. An adjudicator from Earth, brought into judge between the relative merits of mining and farming, is impersonated by the Master, whose single aim is to acquire the Doomsday Machine, guarded in a nearby ruined city by alien priests. The Doctor and Jo prevent the exile of the Colonists by exposing the IMC. They also stop the Master from seizing the Machine by convincing its guardian - the sole survivor of the race that built the Machine - to set it to self destruct. The Master again makes his escape.
.
.


The Doctor:  Jon Pertwee
Jo Grant: Katy Manning
Brig. Lethbridge-Stewart: Nicholas Courtney

Guest Appearances:
The Master: Roger Delgado
Time Lords: Peter Forbes-Robertson, John Baker, Graham Leaman
Robot: John Scott Martin
Leeson: David Webb
Jane: Shelia Grant
Martin: John Line
Ashe: John Ringham
Mrs. Martin: Mitzi Webster
Winton: Nicholas Pennell
Mary Ashe: Helen Worth
Norton: Roy Skelton
Primitive & Long: Pat Gorman
Caldwell: Bernard Kay
Dent: Morris Perry
Morgan: Tony Caunter
Holden: John Herrington
Allen: Stanley McGeagh
Leeson: John Tordoff
Guardian: Norman Atkyns
Alien Priests: Roy Heymann, Stanley Mason, Antonia Moss
.
.

Producer:  Barry Letts.
Script Editor: Terrence Dicks.
Writer: Malcolm Hulke.
Director: Michael Bryant.
Designer: Tim Gleason. 
Costume: Michael Burdle.
Make up: Jan Harrison.
Visual Effects: Bernard Wilke.
Music : Dudley Simpson.
.
.



Novelised as "Doctor Who And The Doomsday Weapon"  by Malcolm Hulke  (0 426 10372 6) first published by Universal Tandem in 1974 with cover by Chris Achilleos.  New edition by W.H. Allen (now Virgin Publishing Ltd.) in 1979 with cover by Jeff Cummins.  Target library number 23. The American version was published by Pinnacle and was number 2 in the series, published in April 1979. It was reprinted several times up until 1989.

.
.
a
Released as "Colony in Space" in the Master Box Tin (with "The Time Monster") in the UK November 2001, (BBC Catalogue #7175). Australia, New Zealand US, and Canada releases still pending. Released in Episodic format, with photomontage cover.

.

.

"Colony in Space" was to feature actress Susan Jameson as Morgan, the vicious and sadistic villain, but Ronnie Marsh the Head of Serials overrode the decision to have a woman in the role, as he felt that casting a woman would not be suitable for a family audience.
Helen Worth who played 'Mary Ashe' is better known for her role as 'Gail Potter' in the long running English soap opera "Coronation Street"
The commentary for the propaganda film watched by the Doctor on the IMC spacecraft was provided by director Michael Briant.
This was the first time that the inside of the Master's TARDIS was seen.

All six episodes exist in color as PAL conversions from NTSC 2" color videotapes, as recovered from syndicated versions sent abroad to Canada in 1979; and as 16mm black & white telerecordings.

Studio recording in TC3. (19-20 March; 2-3 April 1971)
Studio recording in TC4. (5-6 March 1971)
Old Baal Clay Pit, B3374, Carclaze, near St. Austell, Cornwall. (10-12, 15-16 February 1971)

Episode 1 - When the Brigadier walks to where the TARDIS has dematerialised from and tells it to "come back at once", luckily for him it reappears in a different corner of the room!
Episode 1 - Jon Pertwee has pronunciation problems again: "We're outside the space/time continny-um."
Episode 1 - The TARDIS doors are wide open when the Doctor and Jo leave to go exploring, but they're slightly ajar when the primitive is sneaking around a minute later. Then when the group of primitives tip over the TARDIS and drag it away, the doors are completely shut!
Episode 1 - The story is set in the year 2472, but at one point, Mary Ashe says that the colonists left Earth "back in '71". Odd thing to say, considering "'71" was only a year ago – why didn't she just say "we left last year"?
Episode 1 - In the Leesons' dome, we see a wall calendar with the date Monday, 2 Mar 2472. Well, the production team only had a 1-in-7 chance to get it right, 2nd March 2472 will actually be a Wednesday.
Episode 1 - When the Doctor tells Winton, "Whatever you saw can be destroyed", there are a few frames missing, causing two of the colonists moving in the background to abruptly change positions.
Episode 2 - When the Doctor meets Caldwell (the moustached IMC surveyor) at the start of episode 2, he persuades the Doc to accompany him back to his ship. Whereupon they both head towards the IMC "jeep" waiting outside, and without a word from either of them, Pertwee gets into the driver's seat and they drive off. But think about it for a moment – Caldwell and the Doctor have only just met, and the jeep belongs to IMC. Why is the Doctor doing the driving?
Episode 2 - As the IMC crew watch the Doctor and Caldwell drive towards their ship, Morgan remarks "Look, Caldwell's found us a colonist – I wonder why he's wearing fancy dress?" (referring to the Doctor's attire). But over his shoulder, we can see the monitor he's looking at while he says this, and the jeep is still way off in the distance – it's tiny! How on earth can he see what the Doctor is wearing?
Episode 2 - Watch out for some minor CSO goofs – there are at least two brief occasions on board the IMC ship when a blank blue screen appears in the background instead of the ship's monitor. One is when Caldwell, Morgan and Captain Dent are arguing about the accidental death of the two colonists, and the other is several minutes later when Morgan and Dent are discussing the identity of the Doctor.
Episode 3, 5 - One of the IMC crew members (played by Pat Gorman) seemingly undergoes a rapid lifestyle change, as he grows a moustache and becomes a colonist within the space of two episodes! In episode 3, he's the IMC crewman that Captain Dent tells to "close down all systems" after the IMC ship lands. Later, in episode 5, he's the colonist that Winton tells to escort the Adjudicator back to his ship.
Episode 3 - As Winton is chased by the IMC guards to Caldwell's camp, his face and hair get covered with dust and grime. In the next scene, inside Caldwell's tent, they are suddenly clean again.
Episode 5 - At one stage, the Master forces the Doctor to try and open the door to the Primitive City, when he finds the IMC are trying to rescue Jo. As he's about to release the poison gas, the Doctor kicks him, knocking the laser gun and the control out of his hand. They are then surrounded by Primitives, who take them inside the city, leaving the laser gun outside. Later, when they escape from the room with the frieze, the Master has his gun again.