31 October (production)


 * 1965 - David Whitaker's contract ended, precipitating the first formal transition between script editors. Dennis Spooner's tenure thus began.
 * 2005 - Rewrites for The Christmas Invasion known as a "goldenrod revision", of New Earth known as a "salmon revision" and of The Age of Steel known as "pink rewrites" were made. These amended Invasion's pre-titles, the introduction to the Sycorax, the Tenth Doctor choosing his outfit, the TARDIS arriving at Lady Cassandra's party, the Doctor discovering Pete Tyler and Rose Tyler being captured and the scene where the aforementioned trio climb a ladder to escape. (DWMSE 14)
 * 2007 - Whilst filming was underway on Partners in Crime, actor Howard Attfield died, requiring the scripts to be rewritten and eventually resulting in the casting of Bernard Cribbins as Donna's grandfather.