| Person: | Characters | Episodes | |
| • Ivor Dean | played | 17 Episodes | |
| • Suzanne Lloyd (1) | played | 6 Episodes | |
| • Ricardo Montez | played | 6 Episodes | |
| • David Bauer | played | 5 Episodes | |
| • Annette Andre | played | 5 Episodes | |
| • Robert Cawdron | played | 5 Episodes | |
| • Jean Marsh | played | 4 Episodes | |
| • Norman Bird | played | 4 Episodes | |
| • Martin Wyldeck | played | 4 Episodes | |
| • Charles Houston | played | 4 Episodes | |
| • Justine Lord | played | 4 Episodes | |
| • Paul Stassino | played | 4 Episodes | |
| • Arnold Diamond | played | 4 Episodes | |
| • Ed Bishop | played | 4 Episodes | |
| • John Serret | played | 4 Episodes | |
| • Larry Taylor | played | 4 Episodes | |
| • Warren Stanhope | played | 4 Episodes | |
| • Neville Becker | played | 4 Episodes | |
| • Hal Galili | played | 4 Episodes | |
| • Eddie Byrne (1) | played | 4 Episodes | |
| • Kate O'Mara | played | 3 Episodes | |
| • Ronald Leigh-Hunt | played | 3 Episodes | |
| • Erica Rogers | played | 3 Episodes | |
| • Bruce Boa | played | 3 Episodes | |
| • Suzan Farmer | played | 3 Episodes | |
| • Alex Scott (1) | played | 3 Episodes | |
| • George Murcell | played | 3 Episodes | |
| • Gerard Heinz (1) | played | 3 Episodes | |
| • Marie Burke | played | 3 Episodes | |
| • John Carson (1) | played | 3 Episodes | |
| • Martin Benson (1) | played | 3 Episodes | |
| • Godfrey Quigley | played | 3 Episodes | |
| • Michael Robbins | played | 3 Episodes | |
| • Guy Deghy | played | 3 Episodes | |
| • Ronald Radd | played | 3 Episodes | |
| • John Tate | played | 3 Episodes | |
| • Paul Whitsun-Jones | played | 3 Episodes | |
| • Warren Mitchell | played | 3 Episodes | |
| • Sandor Eles | played | 3 Episodes | |
| • Jeremy Burnham | played | 3 Episodes | |
| • George Pastell | played | 3 Episodes | |
| • Imogen Hassall | played | 3 Episodes | |
| • Jack Gwillim | played | 3 Episodes | |
| • Stanley Meadows | played | 3 Episodes | |
| • Marne Maitland | played | 3 Episodes | |
| • Tony Wright | played | 3 Episodes | |
| • Peter Elliott (1) | played | 3 Episodes | |
| • Ferdy Mayne | played | 3 Episodes | |
| • Anthony Bate | played | 3 Episodes | |
| • Sylvia Syms | played | 3 Episodes | |
| • Peter Dyneley | played | 3 Episodes | |
| • Andreas Malandrinos | played | 3 Episodes | |
| • Peter Illing | played | 3 Episodes | |
| • John Forbes-Robertson (1) | played | 3 Episodes | |
| • Leslie Crawford (1) | played | 3 Episodes | |
| • Mary Jones (1) | played | 3 Episodes | |
| • Shirley Eaton | played | 3 Episodes | |
| • Robert Hutton | played | 3 Episodes | |
| • Maggie Wright | played | 3 Episodes | |
| • Walter Brown (2) | played | 3 Episodes | |
| • David Kelsey | played | 2 Episodes | |
| • Harry Littlewood | played | 2 Episodes | |
| • Lois Maxwell | played | 2 Episodes | |
| • Jane Asher | played | 2 Episodes | |
| • Jennie Linden | played | 2 Episodes | |
| • T. P. McKenna (1) | played | 2 Episodes | |
| • Elspeth March | played | 2 Episodes | |
| • Ray Austin | played | 2 Episodes | |
| • Jane Merrow | played | 2 Episodes | |
| • Barbara Murray | played | 2 Episodes | |
| • Patrick Westwood | played | 2 Episodes | |
| • Patricia Donahue | played | 2 Episodes | |
| • Ann Bell | played | 2 Episodes | |
| • William Sylvester | played | 2 Episodes | |
| • John Bennett (1) | played | 2 Episodes | |
| • Eric Mason | played | 2 Episodes | |
| • Derek Newark | played | 2 Episodes | |
| • Noel Trevarthen | played | 2 Episodes | |
| • Percy Herbert | played | 2 Episodes | |
| • Alexandra Bastedo | played | 2 Episodes | |
| • Donald Sutherland | played | 2 Episodes | |
| • Peter Wyngarde | played | 2 Episodes | |
| • Patrick Troughton | played | 2 Episodes | |
| • Nicholas Courtney | played | 2 Episodes | |
| • Steven Scott | played | 2 Episodes | |
| • Peter Jeffrey (1) | played | 2 Episodes | |
| • Mike Pratt | played | 2 Episodes | |
| • Roger Delgado | played | 2 Episodes | |
| • Fulton Mackay | played | 2 Episodes | |
| • John Dearth | played | 2 Episodes | |
| • Alec Mango | played | 2 Episodes | |
| • Manning Wilson | played | 2 Episodes | |
| • Meredith Edwards (1) | played | 2 Episodes | |
| • Raymond Ray | played | 2 Episodes | |
| • Michael Peake | played | 2 Episodes | |
| • Geoffrey Bayldon | played | 2 Episodes | |
| • Ronald Ibbs | played | 2 Episodes | |
| • Basil Dignam | played | 2 Episodes | |
| • John Gabriel (2) | played | 2 Episodes | |
| • Francis Matthews | played | 2 Episodes | |
| • Philip Latham | played | 2 Episodes | |
| • Meadows White | played | 2 Episodes | |
| • Tommy Duggan (1) | played | 2 Episodes | |
| • Alan MacNaughtan | played | 2 Episodes | |
| • Neil McCarthy | played | 2 Episodes | |
| • Ronald Wilson | played | 2 Episodes | |
| • Wolfe Morris (1) | played | 2 Episodes | |
| • Carl Duering | played | 2 Episodes | |
| • Henry Soskin | played | 2 Episodes | |
| • Raymond Adamson | played | 2 Episodes | |
| • George Little | played | 2 Episodes | |
| • Edwin Brown (1) | played | 2 Episodes | |
| • David Cargill | played | 2 Episodes | |
| • John McLaren (1) | played | 2 Episodes | |
| • Charlotte Selwyn | played | 2 Episodes | |
| • Frank Olegario | played | 2 Episodes | |
| • Bill Nagy | played | 2 Episodes | |
| • George Roubicek | played | 2 Episodes | |
| • Eric Pohlmann | played | 2 Episodes | |
| • Alan Haywood | played | 2 Episodes | |
| • Campbell Singer | played | 2 Episodes | |
| • Fredric Abbott (1) | played | 2 Episodes | |
| • Barry Linehan | played | 2 Episodes | |
| • Maurice Good | played | 2 Episodes | |
| • Alexander Davion | played | 2 Episodes | |
| • Hugh Morton | played | 2 Episodes | |
| • Burt Kwouk | played | 2 Episodes | |
| • Wanda Ventham | played | 2 Episodes | |
| • Russell Waters | played | 2 Episodes | |
| • Sue Lloyd (1) | played | 2 Episodes | |
| • Joby Blanshard | played | 2 Episodes | |
| • Yolande Turner | played | 2 Episodes | |
| • Victor Maddern | played | 2 Episodes | |
| • Eunice Gayson | played | 2 Episodes | |
| • Carol Cleveland | played | 2 Episodes | |
| • Jeremy Young (1) | played | 2 Episodes | |
| • Michael Wynne | played | 2 Episodes | |
| • Peter Diamond | played | 2 Episodes | |
| • Harvey Hall | played | 2 Episodes | |
| • Roy Patrick | played | 2 Episodes | |
| • Donald Pickering | played | 2 Episodes | |
| • James Maxwell | played | 2 Episodes | |
| • Tim Barrett | played | 2 Episodes | |
| • Richard Owens | played | 2 Episodes | |
| • Nosher Powell | played | 2 Episodes | |
| • Jimmy Gardner (1) | played | 2 Episodes | |
| • Simon Lack | played | 2 Episodes | |
| • Glynn Edwards | played | 2 Episodes | |
| • Harry Towb | played | 2 Episodes | |
| • Penelope Horner | played | 2 Episodes | |
| • Reginald Jessup | played | 2 Episodes | |
| • John Ronane | played | 2 Episodes | |
| • Bryan Marshall | played | 2 Episodes | |
| • Ray Lonnen | played | 2 Episodes | |
| • Anthony Nicholls | played | 2 Episodes | |
| • Terence Rigby | played | 2 Episodes | |
| • Kenneth Gardnier | played | 2 Episodes | |
| • John Bloomfield | played | 2 Episodes | |
| • Suzanne Neve | played | 2 Episodes | |
| • Alan Curtis | played | 2 Episodes | |
| • Brian Harrison (1) | played | 2 Episodes | |
| • Dawn Addams | played | 2 Episodes | |
| • Joseph Fürst | played | 2 Episodes | |
| • Peter Lawrence (1) | played | 2 Episodes | |
| • Michael Godfrey | played | 2 Episodes | |
| • Andre Maranne | played | 2 Episodes | |
| • Robert Crewdson | played | 2 Episodes | |
| • Norman Florence | played | 2 Episodes | |
| • Alan Gifford | played | 2 Episodes | |
| • Hedger Wallace | played | 2 Episodes | |
| • Michael Graham (1) | played | 2 Episodes | |
| • Anne Sharp | played | 2 Episodes | |
| • Reg Lye | played | 2 Episodes | |
| • David Garfield (1) | played | 2 Episodes | |
| • Clive Cazes | played | 2 Episodes | |
| • John Barrie (1) | played | 2 Episodes | |
| • Gordon Sterne | played | 2 Episodes | |
| • Michael Anthony (1) | played | 2 Episodes | |
| • Oliver Reed | played | 2 Episodes | |
| • Walter Randall | played | 2 Episodes | |
| • Nicholas Pennell | played | 2 Episodes | |
| • Katherine Schofield | played | 2 Episodes | |
| • Caron Gardner | played | 2 Episodes | |
| • Iain Blair | played | 2 Episodes | |
| • Anthony Wager | played | 2 Episodes | |
| • Geoffrey Lumsden | played | 2 Episodes | |
| • Salmaan Peer | played | 2 Episodes | |
| • Gary Cockrell | played | 2 Episodes | |
| • Thomas Baptiste | played | 2 Episodes | |
| • Moultrie Kelsall | played | 2 Episodes | |
| • Howard Douglas | played | 2 Episodes | |
| • Robert Ayres | played | 2 Episodes | |
| • Philo Hauser | played | 2 Episodes | |
| • William Buck | played | 2 Episodes | |
| • Laurence Herder | played | 2 Episodes | |
| • Vicky Hughes | played | 2 Episodes | |
| • John Collin (1) | played | 2 Episodes | |
| • Tony Arpino | played | 2 Episodes | |
| • Nicholas Stuart | played | 2 Episodes | |
| • André Boulay | played | 2 Episodes | |
| • Stella Bonheur | played | 2 Episodes | |
| • Jacqueline Ellis | played | 2 Episodes | |
| • Leslie Anderson | played | 2 Episodes | |
| • Hazel Hughes | played | 2 Episodes | |
| • Leon Cortez | played | 2 Episodes | |
| • George Pravda | played | 2 Episodes | |
| • Michael Pemberton (2) | played | 2 Episodes | |
| • Michael Rittermann | played | 2 Episodes | |
| • Jerry Stovin | played | 2 Episodes | |
| • Jean St. Clair | played | 2 Episodes |