On 18 January, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1964 - "The Expedition", the fifth episode of The Daleks, was first broadcast on BBC tv.
- 1965 - Part one of the story The Therovian Quest was first published in the 684th issue of TV Comic.
- 1969 - Episode four of The Krotons was first broadcast on BBC1.
- 1969 - Part three of the TV Comic story Father Time was first published.
- 1975 - Part four of Robot was first broadcast on BBC1.
- 1975 - Part two of the TV Comic story Death Flower was first published.
- 1979 - The novelisation of The Hand of Fear was first released by Target Books.
- 1982 - Part one of Four to Doomsday was first broadcast on BBC1.
- 1983 - Part one of Snakedance was first broadcast on BBC1.
- 1990 - The novelisation of Planet of Giants was first released by Target Books. With this release, all serials of the First Doctor era were now novelised.
- 1996 - Just War and the novelisation of Downtime were first published by Virgin Books.
- 1997 - Part three of the Radio Times comic story Perceptions was first published.
- 2010 - The DVD box set The Peladon Tales was first released in Region 2.
- 2012 - Part Three of K9's Question Time was first broadcast on the second series of Stargazing Live.
- 2016 - Into the Unknown, the first Erimem anthology, was first published by Thebes Publishing.
- 2016 - Uncanny Valley was released by Big Finish.
- 2017 - Part one of Slaver's Song was first published in 9DO 9.