BBC One London Schedule Saturday 20 September 1975

London Schedule

Afternoon
1. 17:20
  Doctor Who (1963–1996)—Season 13, Terror of the Zygons: Part 4
  Broton the Zygon warlord intends to use the Skarasen to attack London.
2. 17:45
  Off air
  Programmes will resume at 23:20
Evening
1. 23:20
  Parkinson—Parkinson Meets David Niven
  Michael Parkinson in conversation with actor David Niven.