20 March (releases)

* 1965 - "The Centre" was first broadcast on BBC1.
* 1965 - The sixth part of the TV Century 21 comic story Power Play was first published.
* 1971 - Episode two of The Claws of Axos was first broadcast on BBC1.
* 1971 - Part five of Gemini Plan was first published in Countdown.
* 1976 - Part one of the TV Comic story Treasure Trail was first published.
* 1980 - The novelisation of The Stones of Blood was first published by Target Books.
* 1980 - The Making of Doctor Who was reprinted by Target Books.
* 1980 - DWM 24 was released by Marvel Comics.
* 1997 - Lungbarrow and The Dark Path were first published by Virgin Books.
* 2008 - Torchwood Magazine comic story Jetsam was first published.
* 2013 - Prisoners of Time 3 was first published by IDW Publishing.
* 2013 - DWDVDF 110 was first published by GE Fabbri Ltd.
* 2015 - Top Trumps (pack 8) was first released by Winning Moves UK Ltd.
* 2018 - Serpent in the Silver Mask was first released by Big Finish Productions.
* 2019 - Time War: Volume Two was released by Big Finish.
* 2023 - The Blu-ray box set The Collection: Season 9 was released by BBC Studios.