25 January (releases)

On 25 January, a number of things set in or relevant to the Doctor Who universe were released or published.


 * 1964 - "The Ordeal" was first broadcast on BBC TV.
 * 1969 - Episode One of The Seeds of Death was first broadcast on BBC1.
 * 1975 - Part One of The Ark in Space was first broadcast on BBC1.
 * 1982 - Part Three of Four to Doomsday was first broadcast on BBC1.
 * 1983 - Part Three of Snakedance was first broadcast on BBC1.
 * 1997 - Part Three of Resurrection of the Autons was first broadcast on BBC1.
 * 2000 - The remastered version of Marco Polo was first broadcast on UPN.
 * 2021 - The Infinite Quest was first broadcast on CBBC and Nickelodeon.