4 April

History of the Doctor Who Universe

 * 2009 - Easter Sunday. Lady Christina de Souza steals the Cup of Athelstan from the International Gallery and makes her getaway on a number 200 London bus, only to be unexpectedly transported to the planet of San Helios in the company of the Doctor. (DW: Planet of the Dead)

History of Doctor Who

 * 1964 - "Assassin at Peking" First Broadcast (Marco Polo Episode 7).
 * 1970 - The Ambassadors of Death Episode 3 First Broadcast.
 * 1976 - George Pastell dies.
 * 2008 - Exit Wounds First Broadcast.
 * 2010 - Liberation First Broadcast. The Eleventh Hour Rebroadcast on BBC Three.