- Elizabeth Shepherd
- Â Syrie Van Epp 4 episodes, 1966
- John Sharp
- Â Kronk 4 episodes, 1966
- Gary Cockrell
- Â Phil Scrotty 4 episodes, 1966
- Alan Curtis
- Â Inspector Blood 4 episodes, 1966
- William Maxwell
- Â Sergeant Hound 4 episodes, 1966
- June Watson
- Â Miss Dunner 2 episodes, 1966
- Rex Boyd
- Â City Type / ... 2 episodes, 1966
- Michael Hall
- Â Air Marshall / ... 2 episodes, 1966
- D. Geoff Tomlinson
- Â Cricketer / ... 1 episode, 1966
- John Woodnutt
- Â Col. Hugo Lemming 1 episode, 1966
- Marian Spencer
- Â Helena of Morphania 1 episode, 1966
- Calvin Lockhart
- Â Theobald Aboo 1 episode, 1966
- Tim Barrett
- Â Christopher Vaughan 1 episode, 1966
- Betty McDowall
- Â Beryl Kempsford 1 episode, 1966
- Ingrid Hafner
- Â Abigail Whitebait 1 episode, 1966
- Roger Hammond
- Â Ferdinand XVIII of Morphania 1 episode, 1966
- Clive Morton
- Â Sir Wilfred Templar 1 episode, 1966
- William Moore
- Â Harold Lemming 1 episode, 1966
- Kevin Brennan
- Â Whitebait 1 episode, 1966
- Nina Baden-Semper
- Â Pearl 1 episode, 1966
- Margery Withers
- Â Miss Winkle 1 episode, 1966
- Donald Webster
- Â Weedy 1 episode, 1966
- Oliver Johnston
- Â Samson Whitby 1 episode, 1966
- Pauline Collins
- Â Syrie's Maid 1 episode, 1966
- Aubrey Morris
- Â Robag 1 episode, 1966
- Simon Prebble
- Â Barrington-Pym 1 episode, 1966
- Ivor Salter
- Â Blinky 1 episode, 1966
- Windsor Davies
- Â Sullavan 1 episode, 1966
- Peter Stephens
- Â Head of Department One 1 episode, 1966
- Ian Trigger
- Â Nonesuch 1 episode, 1966
- Des Braiden
- Â Head of Department Eight 1 episode, 1966
- Geoffrey Reed
- Â Hard Man 1 episode, 1966
- Ray Gatenby
- Â Bo 1 episode, 1966
- Ian Cooper
- Â Voice 2 1 episode, 1966
- Keith Pyott
- Â Bishop 1 episode, 1966
- Patrick Kavanagh
- Â Major Ironside 1 episode, 1966
- Brian Stone
- Â Head of Department Fourteen 1 episode, 1966
- Peter Jesson
- Â First Mr. Grimm 1 episode, 1966
- Robert McBain
- Â Jolyon de Farge 1 episode, 1966
- Mark Hardy
- Â Second Mr. Grimm 1 episode, 1966
- Sandra Downs
- Â Mary Bone 1 episode, 1966
- Alick Hayes
- Â Admiral 1 episode, 1966
- George Ghent
- Â Removal Man 1 episode, 1966
- Duncan Taylor
- Â County Type 1 episode, 1966
- Bertie Green
- Â First Negro 1 episode, 1966
- Paul Wynter
- Â Second Negro 1 episode, 1966
- Arthur Lester
- Â Waiter 1 episode, 1966
- Malcolm Douglas
- Â Assassin 1 episode, 1966
- Doel Luscombe
- Â Field Marshal 1 episode, 1966
- Sheila Whittingham
- Â First Nurse 1 episode, 1966
- Christine Glynn
- Â Candy 1 episode, 1966
- Susan Foster
- Â Second Nurse 1 episode, 1966
- Eileen Atienza
- Â Woman (uncredited) 1 episode, 1966
