18 July (releases)


 * 1964 - "A Race Against Death" was first broadcast on BBC1.
 * 1970 - Part one of the TV Comic story Doctor Who and the Rocks from Venus was first published.
 * 1996 - The anthology Decalog 3: Consequences was first published by Virgin Books.
 * 1996 - Christmas on a Rational Planet and The Scales of Injustice were first published by Virgin Books.
 * 2018 - Machines was first released by Big Finish Productions.