31 January

Behind the scenes

 * 1937 - Actor Davyd Harries was born.
 * 1970 - Episode one of Doctor Who and the Silurians was first broadcast on BBC1.
 * 1976 - Part one of The Seeds of Doom was first broadcast on BBC1.
 * 1981 - Part one of The Keeper of Traken was first broadcast on BBC1.