Dirk Bogarde
Dr. Henry Laidlaw Longman
Michael Bryant
Dr. Danny Tate
Harold Goldblatt
Professor Sharpey
Terence Alexander
Rowing Coach (uncredited)
Grace Arnold
Train Passenger (uncredited)
Timothy Beaton
Paul Longman (uncredited)
Elizabeth Counsell
Girl Student on Station (uncredited)
Roger Delgado
Dr. Jean Bonvoulois (uncredited)
Ian Dewar
Crowd Ringleader (uncredited)
Geoffrey Denton
Train Guard (uncredited)
Ashik Devello
2nd Indian Student (uncredited)
Terence Edmond
1st Student at Party (uncredited)
Christopher Ellis
Peers Longman (uncredited)
Edward Fox
Stewart (uncredited)
Imogen Hassall
Student (uncredited)
Robin Hawdon
Student (uncredited)
Georgina Moon
Persephone Longman (uncredited)
Edward Palmer
Porter (uncredited)
Philip Ray
Father (uncredited)
Renu Setna
1st Indian Student (uncredited)
Anthony Singleton
Boy Student on Station (uncredited)
Teresa Van Hoorn
Penny Longman ( uncredited)
David Weston
Student at Party (uncredited)
Pauline Winter
Mother (uncredited)
