1979 (production)


 * 30 April to 3 May - Filming for City of Death took place in Paris, marking the first time Doctor Who was filmed outside the United Kingdom.
 * Early November - John Nathan-Turner officially began his ten-year stint as producer of Doctor Who (he was not involved in the production of the season then underway). Among the changes he implemented for the coming season were the introduction of a new arrangement of the theme song by Peter Howell, an updated opening credits sequence, and the announcement that the 1980-81 season would be Tom Baker's last as the Fourth Doctor.
 * Labour action forced production to be halted on the six-part serial HOMEVID: Shada. Ultimately, it was decided to abandon the serial, which signalled a premature end for the 1979-80 season with The Horns of Nimon.