25 January (releases)


 * 1964 - "The Ordeal" was first broadcast on BBC tv.
 * 1969 - Episode one of The Seeds of Death was first broadcast on BBC1.
 * 1969 - Part four of TV Comic story Father Time was first released.
 * 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.