1901

January

 * 1 - When the Third Doctor was exiled to Earth to protect it from future alien threats, he was restricted from travelling earlier than this date due to his exile by the Time Lord council. (DW: The War Games) This exile was lifted by the Time Lords when the Doctor, along with his first and second incarnations, defeated Omega. (DW: The Three Doctors.)

December

 * 12 - While on an expedition to the ruins of Babylon, time sensitive linguist John Lafayette stumbled across a time path to Babylon, circa 570 B.C. (BNA: Walking to Babylon)

unknown dates

 * An English author began writing stories for The Ensign, a magazine for young boys. He would later vanish into the Land of Fiction and become the Master of the Land. (DW: The Mind Robber)
 * The first British submarine was launched. (DW: Enlightenment)
 * Jack Harkness, who had been buried alive under Cardiff since 27 AD, was recovered by Alice Guppy and the Torchwood Cardiff team when they received a signal from a transmitter hidden on him by John Hart. To avoid a paradox of meeting his younger self, who at this time was on an assignment, Jack asked to be cryo-preserved until he caught up to his proper timeline in 2009. (TW: Exit Wounds)

January

 * 23 - Bart Allison (Maximus Pettulian in DW: The Romans) was born.

June

 * 18 - Llewellyn Rees (Pandak III in DW: The Deadly Assassin) was born.