Series: BBC Television
Season number: 3
Story number: 36
Blake's 7 crew: Avon (Paul Darrow)

Cally (Jan Chappell)
Vila (Michael Keating)
Tarrant (Steven Pacey)
Dayna (Josette Simon)
Zen (Peter Tuddenham)
Orac (Peter Tuddenham) (uncredited)

Recurring villains: Nil
Writer: Trevor Hoyle
Script editor: Chris Boucher
Designer: Jan Spoczynski, Ken Ledsham
Director: Vere Lorrimer
Producer: David Maloney
Copyright date: 1980
Broadcast date: 10 March 1980
Format: 1 x 50 minute episode
Previous story: Sarcophagus
Next story: Moloch
Publisher: BBC
Script: Ultraworld


From the VHS release:

The Ultra spend their lives on Ultraworld collecting information and Cally and Avon's brain patterns are next on their list. Now the race is on! Tarrant and Dayna must reach them before they are absorbed into the Core...


The Liberator comes across an artificial construct Ultraworld, although Vila is more interested in trying to teach Orac how jokes work. Left alone on the flight deck, Cally is transfixed while staring at Ultraworld and next morning the crew find her gone. They detect what is apparently a distress call from her inside Ultraworld, but which is actually faked.

Avon, Tarrant and Dayna teleport across and encounter a trio of silver-skinned humanoids, the Ultra. The Ultra explain they are seeking out all the knowledge of the universe and mention details about Avon and Tarrant. They then show them an unconscious Cally, who they claim was injured in an accident and is being healed. Avon stays with her while Tarrant and Dayna explore the ship. They come across a group of blank-minded zombies, who the Ultra dub menials, and Tarrant views the memory record of one of them, Relf, learning that the Ultra feed the brain patterns of those they capture into Ultraworld's Core.

The Ultra have already extracted Cally's mind and do the same to Avon. Tarrant and Dayna are captured by the menials but the Ultras offer her to replace them all if the pair demonstrate the one gap in their knowledge of humanity: the human mating ritual. Tarrant and Dayna agree but this is merely a ruse to use a concealed explosive to blast their way out of the cell. They prevent Avon and Cally's bodies from being fed to the Core, the fate of all the blanks not turned into menials, and Tarrant manages to retrieve and reimplant their minds.

Meanwhile, the Ultra transfix Vila and force him to fly the Liberator into Ultraworld. As they are doing so, Orac directs Vila to recite his jokes. Avon uses the Ultra's equipment to locate the ship and Tarrant kills two Ultras while guarding the door. Since their teleport bracelets have been destroyed, they instruct Vila to open the airlock. The remaining Ultra finds the Core collapsing and disintegrates.

With the crew back onboard, the Liberator blasts clear as Ultraworld collapses. Vila informs the crew that he was the one who saved them and Orac confirms that Vila distracted the Core while he reflected its beams back at it and caused its talking gibberish.



Story notesEdit



Filming locationsEdit

Camden Deep Tunnels

Production errorsEdit

To be added.


  • Servalan is mentioned.
  • The Ultras state that Avon tried to steal five hundred million credits from the Federation banking system. In "Space Fall", the figure was given as five million and he dreamed of stealing a hundred million.


Avon: Vila is teaching Orac? No, it doesn't make sense.

Avon: I told you to stand by, not lie down.

Avon: You have to make me sleep. I intend to suffer from insomnia.

Home video releasesEdit

Series 3 DVD

DVD cover

  • Original BBC video release (Volume 18) in 1992.
  • Fabulous Films video reissue (Volume 18) on 3 May 1999.
  • DVD release as part of the Series 3 box set on 20 June 2005.

External linksEdit

To be added.


  1. Nazzaro, Joe & Wells, Sheelagh (1997). Blake's 7: The Inside Story, p. 72. Virgin Publishing, London. ISBN 0753500442.
Blake's 7 Stories
TV Stories:

Series 1: The Way Back • Space Fall • Cygnus Alpha • Time Squad • The Web • Seek-Locate-Destroy • Mission To Destiny • Duel • Project Avalon • Breakdown • Bounty • Deliverance • Orac

Series 2: Redemption • Shadow • Weapon • Horizon • Pressure Point • Trial • Killer • Hostage • Countdown • Voice From The Past • Gambit • The Keeper • Star One

Series 3: Aftermath • Powerplay • Volcano • Dawn of the Gods • The Harvest of Kairos • City at the Edge of the World • Children of Auron • Rumours of Death • Sarcophagus • Ultraworld • Moloch • Death-Watch • Terminal

Series 4: Rescue • Power • Traitor • Stardrive • Animals • Headhunter • Assassin • Games • Sand • Gold • Orbit • Warlord • Blake

BBC Radio Stories: The SevenFold Crown • The Syndeton Experiment

B7 Media Audio Reimagination: Rebel • Traitor • Liberator • When Vila Met Gan • Point Of No Return • Eye Of The Machine • Blood & Earth • Flag & Flame • The Dust Run • The Trial • Escape Velocity

Big Finish Audio Stories: Lucifer • Warship • Fractures • Battleground • Drones • Mirror • Cold Fury • Caged

Big Finish Liberator Chronicles: The Turing Test • Solitary • Counterfeit • The Magnificent Four • False Positive • Wolf • The Armageddon Storm • Promises • Epitaph • Kerr • Logic • Risk Management • Three • Incentive • Jenna's Story • Blake's Story • Spy • Disorder • The Hard Road • President • The Sea of Iron • Spoils

Big Finish Novels: The Forgotten • Archangel

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