On 27 March, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1965 - "The Lion" was first broadcast on BBC1.
- 1965 - The seventh and final part of Power Play was first published in TV Century 21.
- 1971 - Episode three of The Claws of Axos was first broadcast on BBC1.
- 1971 - Part one of Timebenders was first published in Countdown.
- 1974 - The novelisations of Colony in Space and of Day of the Daleks were first published by Target Books.
- 1976 - Part two of the TV Comic story Treasure Trail was first published.
- 1980 - DWM 25 was released by Marvel Comics.
- 1986 - Search for the Doctor and Crisis in Space, books one and two of the Make Your Own Adventure with Doctor Who line were published by Severn House.
- 2011 - The Cardiff Doctor Who exhibition closed.[source needed]
- 2015 - Toby Hadoke's Who's Round 113 was released online.
- 2018 - The Turn of the Screw was first released by Big Finish Productions.
- 2019 - Toby Hadoke's Who's Round 245 was released online.
- 2019 - Doctors and Dragons was first released by Big Finish.
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