1919

June

 * 28 - The signing of the Treaty of Versailles officially brought an end to World War I, although fighting had ended the previous November.

Unknown dates

 * The Seventh Doctor, Bernice Summerfield, Roz Forrester and Chris Cwej investigated the disappearance of children throughout Europe and assisted in the end of the Q'ell war. (NA: Toy Soldiers)
 * Harriet Derbyshire of Torchwood Three was killed. (TW: To the Last Man)

February

 * 4 - Peter Butterworth, who played the Monk, is born in Bramhall, Cheshire, England.

April

 * 8 - David Dodimead, who played Barclay in "The Tenth Planet," is born in Shepton Mallet, Somerset, England.

June

 * 5 - Laurence Payne, who played Johnny Ringo in "The Gunfighters," Morix in "The Leisure Hive," and Dastari in "The Two Doctors," is born in London.
 * 11 - Richard Todd is born.

July

 * 7 - Jon Pertwee, the third actor to portray the Doctor, is born in Chelsea, London.
 * 12 July - Victor Lucas is born.

November

 * 26 - Noel Coleman is born.

December

 * 14 - Michael Bilton, who played Charles de Teligny in "The Massacre of St Bartholomew's Eve," Collins in "Pyramids of Mars," and a Time Lord in "The Deadly Assassin," is born in Cottingham, England.

Unknown date

 * John Doye is born.
 * Peter Howell is born.
 * Raymond Westwell is born.