Season 3

John Paul

Dr Spencer Quist

11 episodes

Joby Blanshard

Colin Bradley

11 episodes

Simon Oates

Dr. John Ridge

11 episodes

Vivien Sherrard

Barbara Mason

11 episodes

Robert Powell

Tobias Wren

11 episodes

John Nolan

Geoff Hardcastle

11 episodes

Michael Elwyn

Richard Duncan

2 episodes

John Barron

The Minister

1 episode

John Lee

Captain - Second Airline Crew

1 episode

Robert James

Barker

1 episode

Morris Perry

Prof. Alec Hetherington

1 episode

Bruce Purchase

Norman Sylvester

1 episode

Leslie Schofield

Harry

1 episode

Cec Linder

Sen. Connell

1 episode

Katherine Kath

Lady Janette Holroyd

1 episode

Jonathan Pryce

Police Constable

1 episode

Michael Keating

Stephen Grigg

1 episode

June Brown

Kit Pedler

1 episode

Margaret John

Mrs. Joan Simpson

1 episode

Geoffrey Palmer

Major Sims

1 episode

Talfryn Thomas

Mr. Hetherington

1 episode

Nicholas Courtney

Phillip

1 episode

Brian Wilde

Prof. Fairbairn

1 episode

Frederick Jaeger

Richard Massingham

1 episode

Elisabeth Sladen

Sarah Collins

1 episode

Christopher Chittell

Dick Burns

1 episode

Paul Seed

Michael Pratt

1 episode

Bernard Horsfall

Steven Granger

1 episode

Llewellyn Rees

Rev. Charles Garrison

1 episode

John Gregg

Roger Halls

1 episode

Moultrie Kelsall

Alexander Drummond

1 episode

Ronald Hines

Ian Drummond

1 episode

Viviane Ventura

Paola Maria Totti

1 episode

Darrol Blake

Director

4 episodes

Quentin Lawrence

Director

2 episodes

Lennie Mayne

Director

2 episodes

Pennant Roberts

Director

2 episodes

Terence Dudley

Director

1 episode

Eric Hills

Director

1 episode

Gerry Davis

Writer

11 episodes

Kit Pedler

Writer

11 episodes

Martin Worth

Writer

3 episodes

Terence Dudley

Writer

2 episodes

John Gould

Writer

1 episode

Ian Curteis

Writer

1 episode

Louis Marks

Writer

1 episode

Roy Russell

Writer

1 episode

Stuart Douglass

Writer

1 episode

Roger Parkes

Writer

1 episode

Brian Hayles

Writer

1 episode