Season 18 (28 episodes) - Random episode
Episode 1 The Leisure Hive, Part One30/08/1980
Episode 2 The Leisure Hive, Part Two06/09/1980
Episode 3 The Leisure Hive, Part Three13/09/1980
Episode 4 The Leisure Hive, Part Four20/09/1980
Episode 5 Meglos, Part One27/09/1980
Episode 6 Meglos, Part Two04/10/1980
Episode 7 Meglos, Part Three11/10/1980
Episode 8 Meglos, Part Four18/10/1980
Episode 9 Full Circle, Part One25/10/1980
Episode 10 Full Circle, Part Two01/11/1980
Episode 11 Full Circle, Part Three08/11/1980
Episode 12 Full Circle, Part Four15/11/1980
Episode 13 State of Decay, Part One22/11/1980
Episode 14 State of Decay, Part Two29/11/1980
Episode 15 State of Decay, Part Three06/12/1980
Episode 16 State of Decay, Part Four13/12/1980
Episode 17 Warriors Gate, Part One03/01/1981
Episode 18 Warriors Gate, Part Two10/01/1981
Episode 19 Warriors Gate, Part Three17/01/1981
Episode 20 Warriors Gate, Part Four24/01/1981
Episode 21 The Keeper of Traken, Part One31/01/1981
Episode 22 The Keeper of Traken, Part Two07/02/1981
Episode 23 The Keeper of Traken, Part Three14/02/1981
Episode 24 The Keeper of Traken, Part Four21/02/1981
Episode 25 Logopolis, Part One28/02/1981
Episode 26 Logopolis, Part Two07/03/1981
Episode 27 Logopolis, Part Three14/03/1981
Episode 28 Logopolis, Part Four21/03/1981