3 March (releases)


 * 1973 - Episode two of Frontier in Space was first broadcast on BBC1.
 * 1973 - Part one of The Glen of Sleeping was first published in TV Action.
 * 2003 - The Aztecs was released on Region 1 DVD.
 * 2008 - A new DVD edition of The Five Doctors was released in Region 2. This version included the remastered version previously issued on VHS and DVD and the first DVD release of the original 1983 version of the story. A commentary by David Tennant was included as an Easter egg in the set - the first time a Doctor other than the one featured in the story provided commentary.
 * 2009 - DVD box set The Key to Time - Special Edition, containing The Ribos Operation, The Pirate Planet, The Stones of Blood, The Androids of Tara, The Power of Kroll and The Armageddon Factor, was first released in Region 1.
 * 2011 - The Ark was released on Region 4 DVD.
 * 2011 - Recording for Big Finish audio story The Doomsday Quatrain completed.