As spoken by the Fourth Doctor, A (Morse code: .- (TV: The Man Who Never Was [+]Loading...["The Man Who Never Was (TV story)"]) was the first letter of the alphabet, preceding B. (TV: The Masque of Mandragora [+]Loading...["The Masque of Mandragora (TV story)"])
As of 25 December 2006, about one-third of Earth's human population had A-positive blood. (TV: The Christmas Invasion [+]Loading...["The Christmas Invasion (TV story)"])
A levels were a type of exam. (TV: Terror of the Autons [+]Loading...["Terror of the Autons (TV story)"], Dragonfire [+]Loading...["Dragonfire (TV story)"])
The first entry in Auteur's Abecedarium claimed that A was for Auteur. (PROSE: Auteur's Abecedarium [+]Loading...["Auteur's Abecedarium (short story)"], POEM: Auteur and the Homeworld [+]Loading...["Auteur and the Homeworld (poem)"])
In November 1963, science teacher Ian Chesterton set his Coal Hill School class a problem with the letters A, B and C representing the three dimensions. However, Susan Foreman pointed out that he had not acknowledged two additional dimensions: D, which Ian reasoned was time, and E, which Susan revealed was space. (TV: "An Unearthly Child" [+]Part of An Unearthly Child, Loading...{"namedep":"An Unearthly Child (1)","1":"An Unearthly Child (TV story)"})
Contingency Plan A was the name the Company gave to the process of releasing dianene to kill the population of a city. (TV: The Sun Makers [+]Loading...["The Sun Makers (TV story)"])
While under mental attack by the Mandragora Helix, the Fourth Doctor and Sarah Jane Smith spoke the alphabet backwards to concentrate. (TV: The Masque of Mandragora [+]Loading...["The Masque of Mandragora (TV story)"])
When trying to remember "Young Parsons'" name, Professor Chronotis went through the alphabet with the Doctor and Romana II. They started with A, B, and C and eventually got to P, Q, and R before he skipped to X and Y. (TV: Shada [+]Loading...["Shada (TV story)"], WC: Shada [+]Loading...["Shada (webcast)"])
As recorded in the Dalek Survival Guide, the 2150s Dalek invasion of Earth involving the First Doctor was part of a version of history "A" relative to "B" and "C". (PROSE: Dalek Survival Guide [+]Loading...["Dalek Survival Guide (novel)"])
Rose Tyler got one A, two Bs, four Cs, and a D in GCSE science. (PROSE: Meet Rose [+]Loading...["Meet Rose (short story)"])
Whilst the pair were surrounded by Geocomtex security guards within Henry van Statten's Vault in 2012, Rose Tyler quipped that the Ninth Doctor would be "Exhibit A" in a hypothetical collection of aliens. (TV: Dalek [+]Loading...["Dalek (TV story)"])
"A" was among the letters written on a set of wooden blocks in Room 802 of Albion Hospital, within which the Empty Child was questioned by Dr Constantine. (TV: The Doctor Dances [+]Loading...["The Doctor Dances (TV story)"])
In 2028, under the influence of Nobody No-One, a cardiogram once sung the alphabet from A to P. (AUDIO: A Death in the Family [+]Loading...["A Death in the Family (audio story)"])
The Tenth Doctor and the entity possessing Sky Silvestry spoke the first fifteen letters of the alphabet simultaneously. (TV: Midnight [+]Loading...["Midnight (TV story)"])
In 2010, Amy Pond wore a gold necklace in the shape of the letter "A". (TV: The Eleventh Hour [+]Loading...["The Eleventh Hour (TV story)"])
Upon seeing the image of Joseph Serf, actually a hologram, Clyde Langer announced that he was "preparing to say the A word", clarifying to Sky Smith that he meant aliens. (TV: The Man Who Never Was [+]Loading...["The Man Who Never Was (TV story)"])