1968 (production)

January

 * January - Terrance Dicks was hired to the Doctor Who production team, as an assistant for Derrick Sherwin.

March

 * 29 March - The decision was made to reduce The Dominators from six parts into five.

April

 * 19 April - The Mind Robber was extended from four parts into five, with Sherwin commissioned to write a new opening episode for the story.

June

 * 21 June - Episode one of The Mind Robber was recorded at BBC Television Centre Studio 3. (TCH 13)