12 February (production)


 * 1969 - Script editor Terrance Dicks commissioned a storyline for what then had the title of Facsimile, intended to be the first serial of season 7 and therefore the first serial in the effectively revamped Doctor Who. It was to be written by Robert Holmes. Holmes was ordered to write a full script on 3 June, and the serial was eventually retitled Spearhead from Space.