22 January (production)


 * 1971 - Script editor Terrance Dicks ordered a storyline for The Ghost Hunters, later known as Day of the Daleks, from writer Louis Marks.
 * 2006 - A tone meeting was held for The Impossible Planet and The Satan Pit. Executive producer and head writer Russell T Davies considered "tough" the key word for this story. (DWMSE 14)
 * 2008 - Russell T Davies completed the initial draft of Journey's End.