- Brian Clemens
- (teleplay by) (15 episodes, 1965-1969)
- Brian Clemens
- (teleplay) (10 episodes, 1961-1969)
- Brian Clemens
- (written by) (6 episodes, 1963-1964)
- Brian Clemens
- (teleplay) (10 episodes, 1961-1969)
- Sydney Newman
- (creator) (26 episodes, 1965-1966)
- Philip Levene
- (teleplay) (12 episodes, 1967)
- Philip Levene
- (teleplay by) (7 episodes, 1965-1968)
- Roger Marshall
- (teleplay by) (6 episodes, 1965-1966)
- Roger Marshall
- (teleplay) (4 episodes, 1962-1967)
- Roger Marshall
- (written by) (4 episodes, 1963-1964)
- Roger Marshall
- (story) (1 episode, 1967)
- Malcolm Hulke
- (written by) (4 episodes, 1963-1964)
- Malcolm Hulke
- (teleplay) (3 episodes, 1962-1963)
- Malcolm Hulke
- (teleplay by) (2 episodes, 1965-1969)
- Tony Williamson
- (teleplay by) (8 episodes, 1965-1969)
- Tony Williamson
- (teleplay) (1 episode, 1967)
- Eric Paice
- (teleplay) (4 episodes, 1962)
- Eric Paice
- (written by) (3 episodes, 1963-1964)
- Eric Paice
- (writer) (1 episode, 1961)
- Martin Woodhouse
- (teleplay) (4 episodes, 1962-1963)
- Martin Woodhouse
- (written by) (2 episodes, 1963-1964)
- Martin Woodhouse
- (teleplay by) (1 episode, 1966)
- John Lucarotti
- (written by) (2 episodes, 1963-1964)
- John Lucarotti
- (rewrite) (1 episode, 1961)
- John Lucarotti
- (teleplay by) (1 episode, 1965)
- John Lucarotti
- (teleplay) (1 episode, 1963)
- John Lucarotti
- (writer) (1 episode, 1961)
- Terry Nation
- (teleplay) (6 episodes, 1968-1969)
- Richard Harris
- (teleplay) (3 episodes, 1961-1967)
- Richard Harris
- (teleplay by) (2 episodes, 1968-1969)
- James Mitchell
- (teleplay) (4 episodes, 1961-1963)
- James Mitchell
- (written by) (1 episode, 1963)
- Jeremy Burnham
- (teleplay by) (5 episodes, 1968-1969)
- Dennis Spooner
- (teleplay by) (3 episodes, 1961-1968)
- Dennis Spooner
- (3 episodes, 1961-1968)
- Patrick Brawn
- (writer) (2 episodes, 1961)
- Patrick Brawn
- (adaptation) (1 episode, 1961)
- Patrick Brawn
- (story) (1 episode, 1961)
- Terrance Dicks
- (teleplay) (2 episodes, 1962-1963)
- Terrance Dicks
- (teleplay by) (1 episode, 1969)
- Terrance Dicks
- (written by) (1 episode, 1964)
- Peter Ling
- (teleplay) (3 episodes, 1961-1963)
- Jeremy Scott
- (teleplay) (2 episodes, 1962)
- Jeremy Scott
- (story) (1 episode, 1967)
- Reed De Rouen
- (adapted by) (1 episode, 1961)
- Reed De Rouen
- (teleplay) (1 episode, 1963)
- Lester Powell
- (teleplay) (2 episodes, 1961-1962)
- Geoffrey Bellman
- (writer) (2 episodes, 1961)
- Terence Feely
- (teleplay) (2 episodes, 1961)
- Sheilah Ward
- (teleplay) (2 episodes, 1961)
- John Whitney
- (teleplay) (2 episodes, 1961)
- Anthony Terpiloff
- (teleplay) (2 episodes, 1962-1963)
- Philip Chambers
- (written by) (2 episodes, 1963-1964)
- Robert Banks Stewart
- (teleplay by) (2 episodes, 1965-1966)
- Patrick Campbell
- (writer) (1 episode, 1961)
- Lewis Davidson
- (teleplay) (1 episode, 1961)
- Fred Edge
- (original story) (1 episode, 1961)
- John Kruse
- (writer) (1 episode, 1961)
- Max Marquis
- (teleplay) (1 episode, 1961)
- Berkely Mather
- (teleplay) (1 episode, 1961)
- Ray Rigby
- (teleplay) (1 episode, 1961)
- Bill Strutton
- (writer) (1 episode, 1961)
- Gerald Verner
- (teleplay) (1 episode, 1961)
- Brandon Brady
- (teleplay) (1 episode, 1962)
- Leonard Fincham
- (teleplay) (1 episode, 1962)
- John Gilbert
- (teleplay) (1 episode, 1962)
- Jon Manchip White
- (teleplay) (1 episode, 1962)
- Rex Edwards
- (written by) (1 episode, 1963)
- Doreen Montgomery
- (teleplay) (1 episode, 1963)
- Phyllis Norman
- (written by) (1 episode, 1963)
- Geoffrey Orme
- (teleplay) (1 episode, 1963)
- Edward Rhodes
- (teleplay) (1 episode, 1963)
- Ludovic Peters
- (written by) (1 episode, 1964)
- Colin Finbow
- (teleplay by) (1 episode, 1965)
- Anthony Marriott
- (story by) (1 episode, 1967)
- Alan Pattillo
- (story) (1 episode, 1967)
- Michael Winder
- (teleplay) (1 episode, 1967)
- Dave Freeman
- (teleplay by) (1 episode, 1968)
- Donald James
- (teleplay) (1 episode, 1968)
- Leigh Vance
- (teleplay by) (1 episode, 1968)
- John Bryce
- (story) (uncredited) (1 episode, 1961)