Survivors of the Flux (TV story)

Survivors of the Flux, prefixed in the title sequence with Chapter Five, and in other sources with Flux, was the fifth episode of series 13 of Doctor Who. It formed the fifth chapter of the six-part serial Doctor Who: Flux.

The episode established "Awsok" as another incarnation of the Shobogan Time Lord Tecteun, whilst revealing the space station she was found on to be the remains of the Division, with an Ood as her servant.

It further revealed the space station to be a Multiversal division point in the Void between what she labelled Universe One and Universe Two, revealing that, with the Flux destroying "One", all that is left is moving into "Two".

Synopsis
As the forces of evil mass, the Doctor, Yaz and Dan face perilous journeys and seemingly insurmountable obstacles in their quest for survival.

Plot
to be added

Cast

 * The Doctor - Jodie Whittaker
 * Yasmin Khan - Mandip Gill
 * Dan Lewis - John Bishop
 * Professor Jericho - Kevin McNally
 * Tecteun - Barbara Flynn
 * Prentis/Grand Serpent - Craig Parkinson
 * Farquhar - Robert Bathurst
 * Karvanista - Craige Els
 * Bel - Thaddea Graham
 * Vinder - Jacob Anderson
 * Swarm - Sam Spruell
 * Azure - Rochenda Sandall
 * Diane - Nadia Albina
 * Millington - Nicholas Blane
 * Williamson - Steve Oram
 * Kate Stewart - Jemma Redgrave
 * Sontaran Commander Stenck - Jonathan Watson
 * Weeping Angels - Barbara Fadden, Isla Moody, Lowri Brown
 * Ood - Simon Carew
 * Voice of Ood - Silas Carson
 * Waiter - Guy List
 * Passenger - Jonny Mathers
 * Alastair Lethbridge-Stewart - Nicholas Courtney
 * Kumar - Kammy Darweish
 * Alfie - George Caple

UNIT

 * UNIT is established at some point between 1958, when Farquhar and "Prentis" discuss it, and 1966, when WOTAN attacked London with the War Machines.
 * Alistair Gordon Lethbridge-Stewart is a newly-recruited corporal in 1967.
 * Kate contacts Petronella Osgood before she goes into hiding.

Locations

 * According to the map, Yaz, Dan and Jericho travelled past River Ganges, across the Bay of Bengal, through a bay between Sumatra and Siam, past Borneo and the Gulf of Siam, through the China Sea and past Formosa on their way from Nepal to the Great Wall of China.
 * Tehraun, Persia, Persian Gulf, Bombay, Hindoostan, Calcutta, Arabian Sea, Bab-el-Mandeb, Maldives, Cape Comorin, Ceylon, Madras, Birmah, China, Canton, Java, Luzon, Philippine Islands, Mindanao and Gilolo can also be seen on the map.

Story notes

 * This is the only story in series 13 not to have a cold opening; all that came before the title sequence is the "Previously" sequence.
 * This story references the real world release date of the subsequent episode, mirroring how The Halloween Apocolypse also referenced and was released on Halloween.
 * This is Nicholas Courtney's first credit on "main" televised Doctor Who since the 1989 story Battlefield. He had since appeared in the 1993 story Dimensions in Time and the The Sarah Jane Adventures story Enemy of the Bane in 2008. The audio clip used for his cameo was taken from the Third Doctor serial Terror of the Autons.
 * Whilst various spin-off media has delved into UNIT's history, this is the first televised story to give an origin for UNIT-UK, who first appear in The Invasion as an already existing "independent intelligence group".

Ratings

 * Overnight: 3.82 million
 * Consolidated: 4.72 million

Filming locations
to be added

Production errors

 * In a close-up shot in the first pyramid scene, Yaz is looking at the Professor whilst talking to him; however, in the next shot, she is seen looking away from him, her head and eyes in a different position.

Continuity

 * and Azure build a psycho-temporal bridge to the Doctor using the Time Force harvested from the Temple of Atropos (TV: Once, Upon Time) and the spatial energy harvested from the lifeforms trapped within the Ravagers' Passengers, (TV: Village of the Angels) in conjunction with the psychic link between Swarm and the Doctor. (TV: The Halloween Apocalypse)
 * The Weeping Angels bring the Doctor back to the Division. (TV: Village of the Angels)
 * Three years have passed since Yaz, Dan and Jericho were left in 1961 by the Weeping Angels. (TV: Village of the Angels)
 * UNIT has been in the works since 1958, but were only established after the invasion of the War Machines on C-Day. (TV: The War Machines)
 * In her pre-recorded message to Yaz, the Doctor mentions they just left the planet Time and hears Yaz calling her from the TARDIS control room. (TV: Once, Upon Time)
 * Karvanista and the Lupari are still protecting Earth from the Flux event, (TV: The Halloween Apocalypse) just as the Doctor had asked them too. (TV: War of the Sontarans)
 * Bel is still using a stolen Lupari ship. (TV: Once, Upon Time)
 * Tecteun reveals she and members within Division caused the Flux to occur and notes that the Doctor launching her TARDIS and its heart into the event is what prevented it destroying the entire universe there and then. She also reveals that the Flux was initiated to primarily destroy the Doctor, explaining why it seemed to target her TARDIS when she first found it. (TV: The Halloween Apocalypse)
 * UNIT found the Doctor's TARDIS in Medderton after the residents all disappeared. (TV: Village of the Angels)
 * The Doctor asks Tecteun if what told her about the Timeless Child on Gallifrey was true, which Tecteun confirms. (TV: The Timeless Children)
 * Tecteun recalls how she found the Doctor as a child underneath a wormhole and how she experimented on her to discover regeneration. (TV: The Timeless Children) She also dismisses the Doctor's efforts to scold her, noting that taking the Doctor and leaving her when her usefulness ran out is similar to how the Doctor treats her companions; Davros and the Dream Lord made similar comments. (TV: Journey's End, Amy's Choice)
 * Diane is still trapped within the Passenger. Vinder remembers seeing her while he was at the Temple of Atropos. (TV: Once, Upon Time)
 * The Doctor's lost memories are contained within a biodata module shaped like a fob watch. (TV: Human Nature) When near it, the voices of her lost incarnations are heard calling towards her. (TV: The Family of Blood, Utopia)
 * Yaz and Dan recall their previous encounters with Joseph Williamson at the Temple of Atropos and in an unknown tunnel. (TV: War of the Sontarans, Once, Upon Time)
 * Tecteun shows the Doctor that she has captured the Weeping Angel whom possessed Claire. (TV: Village of the Angels)
 * UNIT's funding is cut in 2017, contributing to its eventual shutdown by 2019. (TV: Resolution)
 * Kate Stewart mentions being the head of UNIT. (TV: The Power of Three, The Day of the Doctor)
 * The Sontarans return to once again invade Earth, seeking revenge for their loss in an alternate timeline. (TV: War of the Sontarans)

DVD releases
to be added

Blu-ray releases
to be added

Digital releases
to be added