 | Sebastian Abineri | ... | Big Bill (9 episodes, 1968) |
 | Liz Crowther | ... | Philippa (9 episodes, 1968) |
 | Len Jones | ... | Sniffer (9 episodes, 1968) |
 | Anthony Peplow | ... | Speedy (9 episodes, 1968) |
 | Michael Feldman | ... | Mini Morris (9 episodes, 1968) |
 | Michael Gwynn | ... | Professor Morris (9 episodes, 1968) |
 | Maureen O'Reilly | ... | Mrs. Morris (9 episodes, 1968) |
 | Tony Caunter | ... | Luigi (5 episodes, 1968) |
 | Marty Cruikshank | ... | Miss Pilkington (5 episodes, 1968) |
 | Lesley Judd | ... | Miss Roberts (5 episodes, 1968) |
 | David Leland | ... | Franco (5 episodes, 1968) |
 | Donald Morley | ... | Dr. Sturgeon (5 episodes, 1968) |
 | Godfrey Quigley | ... | Captain Morgan (5 episodes, 1968) |
 | John Aston | ... | Man (4 episodes, 1968) |
 | Caroline Blakiston | ... | Auntie Cuthbert (4 episodes, 1968) |
 | Hugh Cross | ... | Smith (4 episodes, 1968) |
 | Harold Innocent | ... | Spitz (4 episodes, 1968) |
 | Norman McGlen | ... | Tich (4 episodes, 1968) |
 | David Morrell | ... | Robinson (4 episodes, 1968) |
 | Terence Rigby | ... | Greenface (4 episodes, 1968) |