| Name | Character | Episodes |
|---|---|---|
| Michael Caine | Helmsman | 249 |
| Tim Curry | Mick | 249 |
| Ian McShane | Geoffrey | 108 |
| Katherine Kath | 2 | |
| Maggie Smith | Anna Carnot | 1 |
| Maggie Smith | Juliet Denise | 1 |
| Maggie Smith | The Girl | 1 |
| John Hurt | Joe | 1 |
| Sean Connery | 1 | |
| John Ireland | Monroe Stahr | 1 |
| Donald Pleasence | President of the USA | 1 |
| Leslie Phillips | Clive Breeze | 1 |
| Leslie Phillips | Charlton | 1 |
| Jonathan Duttine | New Soldier | 1 |
| Thorley Walters | Professor Mortimer | 1 |
| George Baker | Mike | 1 |
| Norman Rossington | Eddie | 1 |
| Norman Rossington | Toby | 1 |
| Norman Rossington | Sydney Martin | 1 |
| Norman Rossington | Blake | 1 |
| Norman Rossington | Dave Gregory | 1 |
| Norman Rossington | Giulio | 1 |
| Jerome Willis | Alister Parkes | 1 |
| Percy Herbert | Sergeant | 1 |
| Diana Rigg | Anita Fender | 1 |
| David McCallum | Jimmy MacGrath | 1 |
| David McCallum | Narrator | 1 |
| John Thaw | Tony | 1 |
| Jill Ireland | Sibyl Vane | 1 |
| Patrick McGoohan | Jack 'Pal' Smurch | 1 |
| John Standing | Sutcliffe | 1 |
| Francesca Annis | Amy Racey | 1 |
| Gordon Jackson | Major Browne | 1 |
| Leo McKern | Charles Warren | 1 |
| Leo McKern | Sam Arlen | 1 |
| Leo McKern | 1 | |
| Leo McKern | Jerry McMahon | 1 |
| Kenneth More | Wilfred Racey | 1 |
| Joss Ackland | Frank Penfold | 1 |
| Joss Ackland | Mr Green | 1 |
| Robert Morley | Mr. Micawber | 1 |
| David Kelly | Totterdel | 1 |
| David Kelly | 'Dead Man' Sweeney | 1 |
| David Kelly | Joe | 1 |
| David Kelly | Cloggy Moore | 1 |
| Anthony Quayle | Harry Albert | 1 |
| Anthony Quayle | Betumain | 1 |
| Peter Sallis | Alfred Purdie | 1 |
| William Russell | Smoky | 1 |
| Jeremy Brett | Plinio Ceccho | 1 |
| Jeremy Brett | Dorian Gray | 1 |
| Rita Davies | Nurse | 1 |
| Terence Alexander | Frank | 1 |
| Derek Fowlds | Richard Racey | 1 |
| Derek Fowlds | Tom Rogers | 1 |
| Patrick Macnee | David Manning | 1 |
| Patrick Macnee | Algernon Moncrieff | 1 |
| Patrick Macnee | Arthur | 1 |
| David Graham | Derek Stedman | 1 |
| David Graham | Lieutenant | 1 |
| David Graham | Willie Bliss | 1 |
| Colin Farrell | Captain | 1 |
| Patricia Routledge | Miss Furling | 1 |
| Michael Bates | 1 | |
| Gary Waldhorn | TV reporter | 1 |
| Norman Bird | Walter | 1 |
| Milo O’Shea | Seamus Connor | 1 |
| George Cole | 1 | |
| George Cole | Edwin | 1 |
| Leslie French | Mr. Forsythe | 1 |
| Richard Briers | Stanley Frelaine | 1 |
| Rhoda Lewis | Mrs. Hawkins | 1 |
| John Cater | Dalrymple | 1 |
| John Savident | Cecil | 1 |
| Biff McGuire | Paul Cunningham | 1 |
| Lee Patterson | Meade | 1 |
| Barry Jackson | Sid | 1 |
| Harry Andrews | Blanco White | 1 |
| Edward Woodward | 1 | |
| Dennis Waterman | Tony | 1 |
| Richard Johnson | Walter Egmont | 1 |
| Geoffrey Keen | Lt. Col. Weekes | 1 |
| Ian Hunter | Sir Malcolm Saville | 1 |
| Sylvia Syms | Kay McCone | 1 |
| Sylvia Syms | Mary Fleming | 1 |
| Keith Michell | Paul de Lussac | 1 |
| Wendy Craig | Valerie Dodds | 1 |
| Harry H. Corbett | Harry Fender | 1 |
| John Hollis | Blond | 1 |
| Charles Lloyd Pack | Merriman | 1 |
| Charles Lloyd Pack | Dr. Swan | 1 |
| Bernard Archard | Sir Adrian Campbell | 1 |
| Bernard Archard | George Boxley | 1 |
| Alan Wheatley | Mr. Murdstone | 1 |
| Alan Wheatley | Hendry | 1 |
| Donald Houston | David | 1 |
| Michael Jayston | Jimmy | 1 |
| Richard Pearson | Major Trumbull | 1 |
| Sue Lloyd | Julie Lister | 1 |
| Stratford Johns | Curly | 1 |
| Gerald Sim | Sutton | 1 |
| John Woodvine | Fred Barrow | 1 |
| Mark Eden | Erskine Craig | 1 |
| Brian Wilde | Simon Trask | 1 |
| Brian Wilde | Ransom | 1 |
| Peter Bull | Mr. Creakle | 1 |
| Susan Hampshire | Gerta Blake | 1 |
| Geoffrey Whitehead | Andrew Lafone | 1 |
| Douglas Wilmer | Arthur de Varville | 1 |
| Hermione Baddeley | Mrs. Liebig | 1 |
| Lynn Redgrave | Caroline | 1 |
| Alfred Burke | John Kelly | 1 |
| Alfred Burke | Ross B. Melnichor | 1 |
| Rosemary Leach | Amy | 1 |
| Rosemary Leach | Jean Hobley | 1 |
| Rosemary Leach | Fay Morton | 1 |
| Rosemary Leach | Sheila | 1 |
| Rosemary Leach | 1 | |
| John Meillon | Michael Beckford | 1 |
| John Meillon | Harry Hopkins | 1 |
| Nigel Stock | Walter Daymer | 1 |
| Nigel Stock | Martin | 1 |
| Paul Angelis | Ted | 1 |
| Brenda Bruce | Miss Cashcart | 1 |
| Ray McAnally | 1 | |
| Ursula Howells | Margaret | 1 |
| Lloyd Lamble | Johnson | 1 |
| Lloyd Lamble | Police Inspector | 1 |
| Robert Brown | Singer | 1 |
| Tony Selby | Sergeant | 1 |
| Angus Lennie | Alfred Shinney | 1 |
| Angus Lennie | Football Fan | 1 |
| Hugh Burden | Lee Warren | 1 |
| Margaretta Scott | Laura Frost | 1 |
| Robert Raglan | 1st Creditor | 1 |
| Robert Raglan | Detective Superintendent | 1 |
| Richard Vernon | Lewis | 1 |
| Barrie Ingham | Ed Crayshaw | 1 |
| Derek Francis | John Goggin | 1 |
| Derek Francis | Percy Grey | 1 |
| Bryan Pringle | Arthur | 1 |
| Stephanie Cole | Betty | 1 |
| Terence Rigby | Jack | 1 |
| Michael Brennan | Bonning | 1 |
| Mervyn Johns | Prison Officer Graves | 1 |
| Mervyn Johns | George Thompson | 1 |
| Donald Churchill | Gordon Parsley | 1 |
| Donald Churchill | Michael Holland | 1 |
| Sharon Duce | Veronica | 1 |
| Erik Chitty | Mr. Wilfrid | 1 |
| Erik Chitty | Masters | 1 |
| Reginald Marsh | Det. Inspector Wadcot | 1 |
| Jack Watson | Mr. Frost | 1 |
| Michael Balfour | 1 | |
| Michael Balfour | Ward | 1 |
| Michael Balfour | Mr. Bollanger | 1 |
| Norman Bowler | Wainwright | 1 |
| Mona Bruce | Mrs. Wetherly | 1 |
| Mona Bruce | Miss Fletcher | 1 |
| Anthony Bate | Stanley | 1 |
| Ian Carmichael | John Worthing J.P. | 1 |
| Noel Howlett | Mr. Face Sr. | 1 |
| Noel Howlett | Mr. Finnemore | 1 |
| Diana Fairfax | Mrs. Holm | 1 |
| Ronald Hines | Charles Hatley | 1 |
| Glenda Jackson | 1 | |
| John Abineri | Reporter | 1 |
| Alan Dobie | Captain Marshall | 1 |
| Pamela Brown | Lady Bracknell | 1 |
| Bert Palmer | Bert Jackson | 1 |
| Derek Nimmo | Andrew | 1 |
| Harry Hutchinson | Roadsweeper | 1 |
| June Barry | Jill Goggin | 1 |
| June Barry | Girl | 1 |
| Frank Gatliff | Henry Kay | 1 |
| Patsy Rowlands | Agatha Mannering | 1 |
| Patsy Rowlands | Sissie | 1 |
| Robert Gillespie | 1 | |
| Rupert Davies | Inspector Shawcross | 1 |
| Rupert Davies | Banham | 1 |
| Rupert Davies | 1 | |
| Rupert Davies | Det. Insp. | 1 |
| Rupert Davies | Geoffrey Hansbury | 1 |
| Rupert Davies | Ramon Cintos | 1 |
| Rupert Davies | Miffin | 1 |
| Michael Darlow | MC | 1 |
| Arthur Lowe | Tailor | 1 |