18 April

History of the Doctor Who Universe

 * 1689 - Judge Jeffreys dies in captivity in the Tower of London.

History of Doctor Who

 * 1964 - "The Velvet Web" First Broadcast (The Keys of Marinus Episode 2)


 * 1970 - DW: The Ambassadors of Death Episode 5 first broadcast


 * 1971 - David Tennant born