- Laurence Payne
- Â Sexton Blake 60 episodes, 1967-1971
- Roger Foss
- Â Edward Clark 'Tinker' 60 episodes, 1967-1971
- Dorothea Phillips
- Â Mrs. Bardell 21 episodes, 1967-1969
- Meredith Edwards
- Â Inspector 'Taff' Evans 7 episodes, 1967-1968
- Elizabeth Bell
- Â Julia Mangini 6 episodes, 1968
- Edward Jewesbury
- Â Dr. John Mangini 6 episodes, 1968
- Philippa Gail
- Â Carole Vane 5 episodes, 1967
- Noel Howlett
- Â Sir Miles Murray 5 episodes, 1968
- David Simeon
- Â Frank Hudson 4 episodes, 1967
- Basil Moss
- Â Paul Passer 4 episodes, 1967
- John Normington
- Â Billy John 4 episodes, 1968
- Polly Adams
- Â Barbara Mayne 4 episodes, 1968
- Morris Perry
- Â Von Meck 4 episodes, 1968
- Veronica Hurst
- Â Patricia Chetwynd 4 episodes, 1968
- Mark Kingston
- Â Randolph King 4 episodes, 1968
- Eric Lander
- Â Inspector Cardish / ... 4 episodes, 1968
- Denis Goacher
- Â Mr. Mist 4 episodes, 1968
- Roger Rowland
- Â Cafe barman / ... 3 episodes, 1967-1969
- Robin Lloyd
- Â Alphonse / ... 3 episodes, 1967-1969
- Aubrey Woods
- Â Inspector 3 episodes, 1967
- Terence de Marney
- Â 'Dutch' Vlieghen 3 episodes, 1967
- Robert Lee
- Â Kir Tan 3 episodes, 1967
- Alan Bennion
- Â The Scorpion 3 episodes, 1967
- Kathleen Eu
- Â Hsi-Shih 3 episodes, 1967
- Sanguine Saintly
- Â Pedro 3 episodes, 1968-1969
- Walter Sparrow
- Â Skeleton Sims 3 episodes, 1968
- Michael Latimer
- Â Vernon Lashwood 3 episodes, 1968
- Rosamund Greenwood
- Â Lady Kettering 3 episodes, 1968
- Michael Wolf
- Â Helmut 3 episodes, 1968
- Basil Henson
- Â The Commander 3 episodes, 1968
- John Hussey
- Â Humphrey Cranber 3 episodes, 1968
- Dona Martin
- Â Leonora Crayle 3 episodes, 1968
- Martin Shaw
- Â Piet Reinders 2 episodes, 1967
- Leonard Sachs
- Â Inspector Van Steen 2 episodes, 1967
- Keith Bonnard
- Â Tseng Fu 2 episodes, 1967
- Eric Dodson
- Â Mr. Hopwood 2 episodes, 1968
- Dominic Roche
- Â Dr. Poole 2 episodes, 1968
- Olwen Brookes
- Â Miss Cranber 2 episodes, 1968
- Edward Atienza
- Â Mr. Timmins 2 episodes, 1968
- Michael Rothwell
- Â Mr. Tapp 2 episodes, 1968
- Michael Graham Cox
- Â Varley 2 episodes, 1969
- Barry Lowe
- Â Jenkins / ... 2 episodes, 1969
- Hugh Morton
- Â Mr. Stott 2 episodes, 1969
- Wallas Eaton
- Â Helmut Waltz 1 episode, 1967
- Fredric Abbott
- Â Matt Carnegie 1 episode, 1967
- Hugh Futcher
- Â Jimmy the Fish 1 episode, 1967
- Ernest Clark
- Â Inspector Coutts 1 episode, 1967
- Pedro
- Â Pedro 1 episode, 1967
- Nicola Pagett
- Â Patricia 1 episode, 1967
- Hilary Mason
- Â Mrs. Abbot 1 episode, 1967
- Arthur Brough
- Â Dr. Anstey 1 episode, 1967
- Bryan Pringle
- Â Henry Brown 1 episode, 1967
- Helen Lindsay
- Â Diana Grant 1 episode, 1967
- Brian Cant
- Â Police Constable 1 episode, 1967
- Geoffrey Chater
- Â William Passer 1 episode, 1967
- John Woodnutt
- Â Det. Sgt. Lace 1 episode, 1967
- Derek Francis
- Â Sir Gerald Trevona 1 episode, 1967
- Royston Tickner
- Â Stanley Mears 1 episode, 1967
- Zuleika Robson
- Â Wendy 1 episode, 1967
- Ann Curthoys
- Â Dutch receptionist 1 episode, 1967
- Julia McCarthy
- Â Lady Trevona 1 episode, 1967
- David Morrell
- Â Editor 1 episode, 1967
- Peter Macann
- Â Jack 1 episode, 1967
- Tommy Yapp
- Â Cheng Pei 1 episode, 1967
- Alan Gerrard
- Â Alan Gurney 1 episode, 1967
- Lee Menzies
- Â Peter 1 episode, 1967
- Milton Johns
- Â Gully 1 episode, 1968
- Ballard Berkeley
- Â John Pollock 1 episode, 1968
- Archie Duncan
- Â Sir Bernard Mackintosh 1 episode, 1968
- Michael Lees
- Â Wilfred 1 episode, 1968
- Anthony Sagar
- Â Henry 1 episode, 1968
- Bob Sessions
- Â Barry Wayne 1 episode, 1968
- David Garth
- Â Mr. Fennell 1 episode, 1968
- Raymond Young
- Â The Rt. Hon. Spencer Chetwynd 1 episode, 1968
- Alan Rolfe
- Â Doctor 1 episode, 1968
- Wendy Hall
- Â Miranda 1 episode, 1968
- Judy Liebert
- Â Newspaper clerk 1 episode, 1968
- Sarah Marshall
- Â Nurse Jones 1 episode, 1969
- John Moulder-Brown
- Â Clive Goodside 1 episode, 1969
- Janine Gray
- Â Sheila Powell 1 episode, 1969
- Harry Towb
- Â Cauli 1 episode, 1969
- Al Mancini
- Â Doctor Angelo 1 episode, 1969
- John Abineri
- Â Robbo 1 episode, 1969
- Bill Nagy
- Â Killer Fingers 1 episode, 1969
- Reginald Marsh
- Â Oliver Goodside 1 episode, 1969
- Barry Linehan
- Â Leo the Gorilla 1 episode, 1969
- Clive Morton
- Â Captain Whitworth 1 episode, 1969
- Kara Wilson
- Â Pinky Lester 1 episode, 1969
- Denys Graham
- Â Humphrey Short 1 episode, 1969
- Charles Morgan
- Â Inspector Davis 1 episode, 1969
- Dennis Chinnery
- Â Lindsay 1 episode, 1969
- Charles Lamb
- Â Charlie Peart 1 episode, 1969
- Karin MacCarthy
- Â Betty Goodside 1 episode, 1969
- William Abney
- Â Commander Young 1 episode, 1969
- Alan Rebbeck
- Â Colins 1 episode, 1969
- Philip Ryan
- Â Guard 1 episode, 1969
- Nadim Sawalha
- Â Abu Naffa 1 episode, 1971
- Allan Cuthbertson
- Â Sir Geoffrey Markham 1 episode, 1971
- André Maranne
- Â Inspector Leblanc 1 episode, 1971
- Peter Madden
- Â Kholov 1 episode, 1971
- Gillian Hawser
- Â Penny Marble 1 episode, 1971
- Heather Emmanuel
- Â Anoona 1 episode, 1971
- Peter Elliott
- Â Blind Beggar 1 episode, 1971
- Anthony Stamboulieh
- Â Inspector Tonbien 1 episode, 1971
