Faction Paradox has a reputation as one of Doctor Who’s most obscure and high-quality spinoffs. Because of this, everyone’s been asking me: How do I get into Faction Paradox? Here’s my answer. (v3.4)
Faction Paradox and the War in Heaven first appeared in the BBC’s Eighth Doctor novels in the late 1990s. Since the Faction Paradox series is designed to be standalone from anything in Doctor Who, by no means do you need to read these novels, but if you want to know how the series fits into the Doctor’s larger universe, you should probably check out at least a few. Which ones you read depend on how into-it you want to get.
Want to dive straight into Faction Paradox? Read Alien Bodies, then Interference (parts one and two). And that’s it; you have all the background knowledge you need. Just skip straight to the next section. This is the track I usually recommend to Doctor Who fans interested in FP!
Want to take the leisurely route? See the sights? Spend a little more time with the Eighth Doctor and his companions? Your list is Vampire Science, Alien Bodies, The Scarlet Empress, The Infinity Doctors, Unnatural History, Dead Romance, Interference, The Blue Angel, The Taking of Planet 5, and The Shadows of Avalon.
Or just read them all in publication order to get all the character arcs and nuances. The last relevant novel is The Adventuress of Henrietta Street.
Once you’ve finished whatever path you started (or even if you decided to skip it), you’re ready for the Faction Paradox series!
Important note: Because FP has such a strong #aesthetic, the stories tend to use alternatives for a lot of familiar Doctor Who terms. (Maaaybe copyright also has something to do with it.) You’d probably be able to pick up on the connections via context clues, but just for clarity’s sake, here are the most important ones:
Time Lords are collectively called “the Great Houses”. (Individual Time Lords are “members of the Great Houses”.)
Gallifrey is called “the Homeworld”.
TARDISes are called “timeships”.
The Web of Time (and the part of the universe that it covers) is called the “Spiral Politic”.
The High Council of Gallifrey is called the “ruling Houses”.
If there’s anything else that’s throwing you off, look it up in my list of connections!
When it comes to starting Faction Paradox, I highly recommend beginning with The Book of the War. As it’s a sort of Bible for the rest of the series, it explains a lot of concepts that get carried into other stories, and checking back with it from time to time is basically guaranteed to always be rewarding. (Plus, Alien Bodies → Interference → The Book of the War is a really wonderful sequence for Doctor Who fans!) But it’s hard to find physical copies and some people struggle with the format, so feel free to skip it.
All the FP novels are completely standalone, so you can jump in anywhere. Some suggestions:
Do you like your end of the world as an emotionally devastating 1970s horror story, a bewildering occult urban fantasy, or a US Presidential Election gone wrong? If the first, read Dead Romance; if the second, read This Town Will Never Let Us Go; if the last, read Head of State.
Want your far-future human history to look like a culture-shocking techno-Heaven, or a classical scifi capitalism-vs-liberation setup? If the former, read Of the City of the Saved; if the latter, read Weapons Grade Snake Oil.
Would you rather your universe-spanning scifi epic to be Moby Dick with universes instead of whales, or I,Claudius with a war between all timelines where Rome never fell and all timelines where the Nazis won WWII? If the former, read The Brakespeare Voyage; if the latter, read Warlords of Utopia.
Would you prefer your staggeringly weird takes on the Great Houses to be contextualized by 16th century Mexico or 17th century England? If the former, read Against Nature; if the latter, read Newtons Sleep (legally free online!).
Another great way to start is through the audio stories, which are split between BBV’s Faction Paradox Protocols (scripts legally free online!) and Magic Bullet’s True History of Faction Paradox. I know a ton of fans who started with the audios, so this is definitely a great route! Both series are completely stand-alone from the books, although your enjoyment would probably be a little enhanced if you’ve read Alien Bodies and Dead Romance.
The final route I’ll suggest is the short story anthologies: in particular, A Romance in Twelve Parts is pretty great as a starting spot (even if its final story does spoil Of the City of the Saved). The Book of the Enemy has also been described as a “sampling platter” of the series’ Deepest Lore™, so check it out if you want to be tossed into the deep end. (Also I wrote a story for it yay!)
My last tip: At some point, go back and read The Adventuress of Henrietta Street and The Taking of Planet 5. They’re both Eighth Doctor novels, and they’re not at all prerequisites, but they both fit quite well into the FP series: the latter has strong ties to Simon Bucher-Jones’ stories, and the former explicitly shares a setting with the Protocols audios and the short-lived FP comic. Also be sure to read Alien Bodies and Interference, if you didn’t already!
In conclusion ... don’t worry too much about anything I just said. It’s the way that’ll probably give you the best understanding, but as I’ve said a billion times now, the Faction Paradox series is pretty beginner-friendly at almost every point! So feel free to start with either set of audios, or the first book you get your hands on. I started on Warlords of Utopia with zero context, and I did fine – and that was before Faction Paradox was even allowed on the Tardis Wiki!
If along the way you get confused by anything, just hit up r/factionparadox or my ask box and I’d love to help. Welcome to the Faction, and may the spirits guide you!
After the 1996 Doctor Who TV movie, which introduced Paul McGann as the Eighth Doctor, the story of the Eighth Doctor’s life continued in a series of novels published by BBC Books. One of the first ones, Alien Bodies (which you can read without any background, and is highly recommended all-around), introduced the idea of a gigantic time war looming in the Doctor’s future.
This isn’t the Last Great Time War; this is something far stranger. The Time Lords are fighting a mysterious Enemy, whose name they’ve hidden at all costs, and they’re losing. Badly. The fighting is less over “places” and “things” than “ideas” and “history”, and the scramble for conceptual territory has pushed the Great Houses – the families / political groups of Time Lords on Gallifrey – farther and farther away from their principles of non-intervention and basic decency.
The Great Houses and their Enemy aren’t the only players in this War in Heaven.
There are the godlike Celestis, formerly known as Gallifrey’s Celestial Intervention Agency, who removed themselves from history and now spend their time making Faustian pacts with lesser species.
There are the humanoid Type 103 TARDISes, which work with the Great Houses but are probably best understood as another group with their own motivations.
There are the posthumans, the wildly-diverse diaspora of humanity’s far-future descendants, who claim neutrality but might have enigmatic ties to the Enemy.
And then there’s Faction Paradox. As one of the authors, Philip Purser-Hallard, explains:
The simplest way to explain it all to normal human beings is this: Faction Paradox is what happens when time-travelling demigods turn Goth.
That’s all the Faction is, really: a rebellious subculture, with all the usual transgressive behaviour and imagery … except that this movement originated on a world of scientific hierarchs with the power to eliminate entire histories at the nod of a head.
Everything else – the rituals with blood and shadows, the bone masks and armour, the cultlike pseudo-family structure – follows from this. The Great Houses are sticklers for the orderly progression of history, so the Faction embrace chaos, crisis and paradox. The Houses’ members are immortal and sterile, so the Faction play with the shocking concepts of death, biology and family. The Houses are arch-rationalists, so the Faction regularly contravene the laws of continuity, history and physics.
Finally the Great Houses are isolationist, so the Faction’s founders long ago opened their membership to selected humans and others from outside their Homeworld.
All of these tendencies are illustrated in the Faction’s perverse choice of home territory: the eleven days excised from the month of September 1762 by Britain’s shift from the Julian to the Gregorian calendar. The London of this nonexistent period has been colonised and indefinitely extended by the Faction, in willful defiance of all sense or logic.
Since the Homeworld itself has been threatened by an Enemy who can scarcely even be satisfactorily defined, let alone identified, the Faction have been profoundly unwilling to choose sides … or at least, to pick one and stick to it.
Instead, rather like teenagers with the keys to their parents’ timeships, they hang around the coolest corners of the War, never fully participating except when forced to, yet forever pursuing their own stubborn, fashionable and often quite baffling agenda.
The Faction themselves aren’t the focus of the Faction Paradox series – in many stories, they don’t even appear! – but their role as Prometheus among the Titans, bringing humanity into a War far beyond anything we’ve ever experienced, makes them our perfect guides in this universe.
In the Eighth Doctor novels, the War in Heaven was given a super unsatisfactory ending in The Ancestor Cell when the Doctor lost his memory and spent a hundred years on Earth. When he emerged from his exile, the Gallifreys were gone (yes, Gallifreys) and the War was over. The Faction Paradox series fills this gap with stories set during the War: stories that don’t feature the Doctor but nonetheless tell the story of his universe. It pushes the setting in some fantastic new directions, and overall it’s some of the most experimental material to ever come out of Doctor Who. I strongly recommend it to anyone who enjoys speculative fiction, regardless of whether you’re a Who fan or not.
If you’re interested in starting the Faction Paradox series, take a look at my “where to start” guide!
between Faction Paradox and other series. None of these are need to understand or enjoy any Faction Paradox stories, but in my opinion, they help a lot. Please reblog and/or comment to let me know any I’m missing!
Alison Tobin appears in Of the City of the Saved and Bernice Summerfield: Ship of Fools.
An amaranth appears in Christmas on a Rational Planet and Against Nature.
Anarchitects appear in Alien Bodies and The Book of the War.
Androgum appear in Of the City of the Saved and Doctor Who: The Two Doctors.
Arrakis appears in Frank Herbert’s Dune and is mentioned (unnamed) in The Book of the War.
Astrolabus: see Auteur
Atonal appears in Smoking Mirror and Against Nature.
Auteur appears in “A Bloody (and Public) Domaine” in The Book of the Enemy, “Going Once, Going Twice” in The Book of the Peace, the Auteur series, and (perhaps as “Astrolabus”) Doctor Who: Voyager et al.
Avus: see The Doctor or Grandfather Paradox
Babel: see Cast
Babewyns: see Mal’akh
The Beauftragter appears in “A Star’s View of Caroline” from Burning with Optimism’s Flames and (as “Johanna Adell”) “Man of Smoke and Dust” from Walking in Eternity.
The Benign Union is named in The Book of the War and appears in Doctor Who: The Guardians of Prophecy.
Biodata appears in Doctor Who and the Deadly Assassin and The Book of the War.
The Black Man appears in Alien Bodies and This Town Will Never Let Us Go.
Breeding-engines appear in The Book of the War, “Cobweb and Ivory” in The Book of the Enemy, and (as “Looms”) Against Nature and Doctor Who: Lungbarrow et al.
The British Rocket Group appears in The Quatermass Experiment et al. and is mentioned in “The Annotated Autopsy of Agent A” in The Book of the Enemy.
Carmen Yeh appears in The Book of the War and “Schrödinger's Botanist” from Perfect Timing. (See my Carmen Yeh guide.)
Caroline appears in “A Star’s View of Caroline” in Burning with Optimism’s Flames and (as “Susan”) Doctor Who and an Unearthly Child et al.
Casts and babels appear in The Book of the War, Newtons Sleep, and (in the individual “Shayde”) Doctor Who: The Tides of Time et al.
Celestial Intervention Agency: see Celestis
The Celestis appear in Alien Bodies, The Taking of Planet 5, The Book of the War et al., and (as “Celestial Intervention Agency”) Doctor Who and the Deadly Assassin et al.
Cenobite: see Eremite
Conductor 71: see Investigator 18
Cousin Ceol: see Sojourner Hooper-Agogô
Chapters: see ruling Houses
Chapterhouses appear in The Book of the War, Against Nature, and Doctor Who: Lungbarrow.
Chris Cwej appears in Dead Romance, The Book of the War, Doctor Who: Original Sin et al., and the Cwej series.
Christine Summerfield appears in Dead Romance and (as “Cousin Eliza”) “The Faction Paradox Protocols” and “The True History of Faction Paradox”.
The Collection of Necessary Secrets appears in Christmas on a Rational Planet, “De Umbris Idearum” from Burning with Optimism’s Flames, and “T.memeticus: A Morphology” from The Book of the Enemy.
Coloth appears in “War Crimes” in Doctor Who: Short Trips, (anonymously) “Cobweb and Ivory” in The Book of the Enemy, “A Farwell to Arms” in The Book of the Peace, and the Coloth series.
Compassion appears in Interference et al., The Book of the War et al., and (as “the female crewmember”) “Toy Story”.
The Cwejen appear in The Book of the War, Warlords of Utopia, and Bernice Summerfield: The Adventure of the Diogenes Damsel.
Cybermen appear in Doctor Who: The Tenth Planet et al, (as “Order of the Iron Soul”, also “Cousin Pinocchio”) The Book of the War, and (as “cymbies”) Weapons Grade Snake Oil.
Daemons: see Infernal Sphere
Daleks: see Invaders
Dronid appears in Alien Bodies, The Book of the War, and (as “Drornid”) Doctor Who: Shada.
Drudges appear in Doctor Who: Lungbarrow and Against Nature.
The Doctor appears in Doctor Who and an Unearthly Child et al., (as “the Relic”) Alien Bodies, (in an abormal state of history) The Infinity Doctors, and (as “the war veteran”) “Now and Thereabouts” from A Romance in Twelve Parts, and “With All Awry” from Myth Makers Presents: Golden Years. He is also mentioned (as “the Evil Renegade”) in Dead Romance, (as the Lord President’s friend) The Taking of Planet 5, (as “the pilot”) “Toy Story”, and (as the first causalty of the War) The Book of the War.
The Doctor’s TARDIS: see the Ship
Earth reptiles appear in “T.memeticus: A Morphology” in The Book of the Enemy, Doctor Who: Love and War, the works of H. P. Lovecraft, (anonymously) Bernice Summerfield: The Adolesence of Time, (as “Silurians”) Doctor Who and the Silurians et al., and (as “Sea Devils”) Doctor Who and the Sea-Devils et al.
Eighteen: see Investigator Eighteen
Cousin Eliza: see Christine Summerfield
Enigma Tree appears in The Enigma Variations, The Inferior Comedy, and “Judy’s War” from Liberating Earth.
Eremites appear in The Book of the War and (as “Cenobites”) Clive Barker’s Hellraiser series.
Eternal War: see First War in Heaven
Evil Renegade: see The Doctor
The Ferrum Legion appears in Warlords of Utopia and (as the “Iron Legion”) Doctor Who and the Iron Legion.
The First War in Heaven against the Yssgaroth is mentioned in The Book of the War, Head of State, Doctor Who and the State of Decay, and (as the “Eternal War”) Doctor Who: The Pit.
Fitz: see Father Kreiner
George III’s mammoth is mentioned in “Grass” and The Adventuress of Henrietta Street and appears in The Book of the War, Political Animals, and (as “Cernunnos”) “Cobweb and Ivory” from The Book of the Enemy.
Grandfather Paradox is mentioned in Christmas on a Rational Planet and Interference and appears in The Book of the War and “Gramps” in A Romance in Twelve Parts.
Great Houses appear in Doctor Who: Lungbarrow and The Book of the War et al.
Great Vampires: see Yssgaroth
High Council: see ruling Houses
The Homeworld appears in The Book of the War et al. and (as “Gallifrey”) Doctor Who and the War Games et al.
Homogeny and Hegemony appear in “A Star’s View of Caroline” from Burning with Optimism’s Flames and (as “Ian” and “Barbara”) Doctor Who and an Unearthly Child et al.
Ian and Barbara: see Homogeny and Hegemony
Icnopilli appears in Against Nature and “The Unwoken Princess” from The Obverse Book of Detectives.
Immaculata Formosii appears in The Book of the War, (as “Olympia”) Newtons Sleep, (as “Lorraine Conti”) Against Nature, and (perhaps as “Immacolata”) Clive Barker’s Weaveworld.
Imogen Tantry appears in “Predating the Predators” from Bernice Summerfield: The Vampire Curse, “De Umbris Idearum” from Burning with Optimism’s Flames, and (as “Pope Beatrix II”) “A Hundred Words from a Civil War” from A Romance in Twelve Parts.
The Imperator appears in The Book of the War, “The Return of the King”, Newtons Sleep, (as “Morbius”) Doctor Who and the Brain of Morbius et al., and (as “the General”) Doctor Who: Warmonger.
The Infernal Sphere and its inhabitants appear in “T.memeticus: A Morphology” from The Book of the Enemy and (as “Daemons”) Doctor Who: The Dæmons et al. The Sphere is also referenced (as “Daemos”) in Doctor Who: The Satan Pit.
The Inferno nightclub appears in Newtons Sleep, The Cabinet of Light, and Doctor Who: The War Machines.
The Invaders appear in “A Star’s View of Caroline” from Burning with Optimism’s Flames, Doctor Who: GodEngine, (anonymously) Dead Romance, The Book of the Enemy, and (as “Daleks”) Doctor Who in an Exciting Adventure with the Daleks et al.
Investigator 81 appears in The Book of the War, (as “Conductor 71”) A Matter of Life and Death, and (perhaps as “Investigator 2”) The Taking of Planet 5.
Iris Wildthyme appears in Interference, “Library Pictures” and “A Hundred Words from a Civil War” from A Romance in Twelve Parts, Weapons Grade Snake Oil, and “Panda and the Airship” from A Clockwork Iris. She debuted in the Phoenix Court series and also appeared in Doctor Who: The Blue Angel. “Library Pictures” ties heavily into “Future Legend” from Iris Wildthyme and the Celestial Omnibus and “The Shape of Things” from Ms Wildthyme and Friends Investigate. Iris is also anonymously quoted in The Book of the War.
Iron Legion: see Ferrum Legion
Johanna Adell: see the Beauftragter
Cousin Justine appears in Alien Bodies, “The Faction Paradox Protocols”, and “The True History of Faction Paradox”.
Judy Collins appears in The Inferior Comedy, The Wander Years, Time’s Enemy, and “Judy’s War” in Liberating Earth.
Kelsey Hooper: see Sojourner Hooper-Agogô
Father Kreiner appears in Interference, (as “the Horror’s body”) Dead Romance, (as “Fitz Kreiner”) Doctor Who: The Taint et al., and (as “the male crewmember”) “Toy Story”.
Krisztina-Judit Németh was first mentioned in Of the City of the Saved, then appeared in “Unification Theory”, “A Hundred Words from a Civil War” from A Romance in Twelve Parts, and “Predating the Predators” from Bernice Summerfield: The Vampire Curse.
The Labyrinth of the Eremites is discussed in The Book of the War and appears in A Labyrinth of Histories, “A Farewell to Arms” from The Book of the Peace, Lawrence Burton’s novel Golden Age, and (most prominently) Clive Barker’s Hellraiser series.
Laura Tobin was mentioned in Bernice Summerfield: Ship of Fools and appears in Interference, Of the City of the Saved, and “A Hundred Words from a Civil War” from A Romance in Twelve Parts.
Lilith appears (as “Lolita”) in “Toy Story” and “The Faction Paradox Protocols” et al., (as “Lilith”) “A Bloody (And Public) Domaine” from The Book of the Enemy, and (perhaps as “the Master’s first TARDIS”) Doctor Who and the Terror of the Autons et al.
Lolita: see Lilith
Loom: see Breeding-engine
Mal’akh appear in The Book of the War, “The True History of Faction Paradox”, Head of State, (as “Babewyns”) The Adventuress of Henrietta Street, (as “Wyrm Callers”) Bernice Summerfield: The Adolescence of Time, and (as “Primords”) Doctor Who: Inferno.
The Manuscript Found in Saragossa’s transmission history is described in The Manuscript Found in Saragossa and referenced in The Book of the War.
Maria appears in “Now or Thereabouts” from A Romance in Twelve Parts and (as “Maria Jackson”) The Sarah Jane Adventures: Invasion of the Bane et al.
Matlacoatl appears in Smoking Mirror and Against Nature.
Martians appear in The War of the Worlds and “The Book of the Enemy” from The Book of the Enemy.
Mary Culver appears in “The Faction Paradox Protocols” and is referenced in The Adventuress of Henrietta Street, The Book of the War, and This Town Will Never Let Us Go.
The Master: see the War King
The Master’s TARDIS: see Lilith
Melange: see Praxis
Members of the Great Houses appear in The Book of the War et al., (as “Time Lords”) Doctor Who and the War Games et al., and (as the “people from the Clockworks”) Wildthyme Beyond! et al.
Morbius: see The Imperator
Nucleolingua symbiotica are discussed in The Book of the War and (as “symbiotic nucleus”) mentioned in Doctor Who: The Two Doctors.
Omega: see Urizen
Ordifica is mentioned in Bernice Summerfield: Down, Bernice Summerfield: Ghost Devices, and Dead Romance, and it appears in Interference and The Book of the War.
Osirians: see Sutekh
Painted warriors: see Terracotta warriors
Panda: see Iris Wildthyme
The Peking Homunculi appear “The Faction Paradox Protocols” and Doctor Who and the Talons of Weng-Chiang.
Pik Lim appears in “Bibliophage” from Decalog 5 and “All the Fun of the Fear” from Burning with Optimism’s Flames.
Praxis appears in The Book of the War, Newtons Sleep, “Cobweb and Ivory” from The Book of the Enemy, and (as “the spice melange”) Frank Herbert’s Dune. It is mentioned (as “praxsis”) in Doctor Who: The Caves of Androzani.
Primords: see Mal’akh
The prison planet of the Great Houses appears in “The Faction Paradox Protocols”, (as “Shada”) Christmas on a Rational Planet, and Doctor Who: Shada.
The Quire appear in Bernice Summerfield: Collected Works and “A Hundred Words from a Civil War” from A Romance in Twelve Parts.
The Raithaduine appear in Against Nature and the independent works of Rachel Redhead, most notably Refugees of the Raithaduine and Orphans of the Raithaduine.
Rassilon: see Urizen
Reginald Forthman appears in “Bibliophage” from Decalog 5 and “All the Fun of the Fear” from Burning with Optimism’s Flames.
The Relic: see The Doctor
The Remote appear in Interference and The Book of the War et al.
Rex Halidom appears in “Battleship Anathema” from Iris Wildthyme and the Celestial Omnibus and “A Hundred Words from a Civil War” from A Romance in Twelve Parts.
Ruling Houses appear in The Book of the War and (as “High Council” and “Chapters”) Doctor Who and the Deadly Assasin et al.
Sabbath appears in The Adventuress of Henrietta Street et al., “The Faction Paradox Protocols”, and Bêtes Noires & Dark Horses.
Scarlette appears in The Adventuress of Henrietta Street, (if she is “Isobel”) Political Animals and Bêtes Noires & Dark Horses, and (if she is “Lucita”) “The True History of Faction Paradox”, as well as “Cobweb and Ivory” from The Book of the Enemy.
Sea Devils: see Earth reptiles
Señor 105 appears in Against Nature, Iris Wildthyme y Señor 105 contra Los Monstruos del Fiesta, and the Señor 105 series.
The Service appears in The Adventuress of Henrietta Street, “The Faction Paradox Protocols”, The Book of the War, and Newtons Sleep.
Seventy-One: see Investigator 18
Shada: see prison planet
Shayde: see cast
Sherlock Holmes series characters appear in Erasing Sherlock, Of the City of the Saved, Tales of the Great Detectives, and “The Book of the Enemy” from The Book of the Enemy, as well as Bernice Summerfield: The Adventure of the Diogenes Damsel and Doctor Who: All-Consuming Fire.
The Ship appears in “Toy Story”, is referenced (as Compassion’s mother) in The Book of the War, and features (as “the Doctor’s TARDIS”) in Doctor Who and an Unearthly Child et al.
Mr Shift appears in Alien Bodies and The Book of the War.
The Ship of a Billion Years appears in “The True History of Faction Paradox” and Bernice Summerfield: The Eye of Horus.
Silurians: see Earth reptiles
Simia KK98 appears in Alien Bodies, Dead Romance, and The Book of the War.
Sojourner Hooper-Agogô appears in Weapons Grade Snake Oil, “Sojourner & Ellie”, (as “Cousin Ceol”) “Now or Thereabouts” from A Romance in Twelve Parts, (as “Kelsey”) “Party Kill Accelerator!” from The Panda Book of Horror, (unnamed) “With All Awry” from Myth Makers Presents: Golden Years, and (perhaps as “Kelsey Hooper”) The Sarah Jane Adventures: Invasion of the Bane.
The Sontarans appear in “The Faction Paradox Protocols” and Doctor Who and the Invasion of Time et al. and are mentioned (as “goblins”) in “Crimes Against History” and Newtons Sleep.
Spice: see Praxis
The Spiderweiss appear in “A Star’s View of Caroline” from Burning with Optimism’s Flames and “Man of Smoke and Dust” from Walking in Eternity.
The Spiral Politic appears in The Book of the War et al. and is mentioned in a different form (as “the Web of Time”) in Doctor Who: Attack of the Cybermen et al.
The Star Chamber is referenced in The Adventuress of Henrietta Street, Doctor Who: The Domino Effect, The Book of the War, and Head of State.
Susan: see Caroline
Sutekh and the Osirians appear in “The True History of Faction Paradox” and Doctor Who and the Pyramids of Mars et al.
TARDIS: see timeship
The TARDIS: see The Ship
Terracotta warriors appear in Warring States, in a slightly different form (as “painted warriors”) in “Cobweb and Ivory” from The Book of the Enemy, and (perhaps as “Weeping Angels”) Doctor Who: Blink et al.
Theo Possible appears in “Party Kill Accelerator!” from Iris Wildthyme: The Panda Book of Horror, “Happily Ever After Is a High-Risk Strategy” from Tales of the City, and Señor 105: By the Time I Get to Venus, or Recuerda.
Time Lords: see Members of the Great Houses
Timeships appear in Dead Romance, The Book of the War et al., “Fear of Corners” from Bernice Summerfield: Life During Wartime, and (as “TARDISes”) Doctor Who and an Unearthly Child et al.
Tlohtoxcatl appears in Against Nature and (as “Tlotoxl”) Doctor Who and the Aztecs.
Tlotoxl: see Tlohtoxcatl
Urizen is mentioned in The Book of the War, the works of William Blake, (as “Rassilon”) Doctor Who and the Deadly Assassin et al., and (as “Omega”) Doctor Who: The Three Doctors et al.
Violent Unknown Events are discussed in The Book of the War and Peter Greenaway’s The Falls (1980).
Venusians appear in Doctor Who: Venusian Lullaby, Señor 105: By the Time I Get to Venus, and (anonymously) “T.memeticus: A Morphology” from The Book of the Enemy.
The War King appears in The Book of the War, “The True History of Faction Paradox”, (as “the Lord President”) The Taking of Planet 5, (as “the Magistrate”) The Infinity Doctors, (as “the War Chief”) Doctor Who and the War Games, and (as “the Master”) Doctor Who and the Terror of the Autons et al.
Web of Time: see Spiral Politic
Weeping Angels: see Terracotta warriors
Xenaria appears in The Taking of Planet 5 and is referenced in The Book of the Enemy.
Yaohtloc appears in Against Nature and (as “Autloc”) Doctor Who and the Aztecs.
Yesodites appear in “A Hundred Words from a Civil War” from A Romance in Twelve Parts and “The Long Midwinter” from Doctor Who: The History of Christmas.
Yssgaroth appear in The Book of the War, Doctor Who: The Pit, and (as “Great Vampires”) Doctor Who and the State of Decay et al.
