Michael Redgrave
Ruxton Towers Reformatory Governor
Tom Courtenay
Colin Smith
Avis Bunnage
Mrs. Smith
Alec McCowen
Brown, House Master
James Bolam
Mike
Joe Robinson
Roach
Dervis Ward
Detective
Topsy Jane
Audrey
Julia Foster
Gladys
James Fox
Willy Gunthorpe - Ranley School Runner (uncredited)
John Thaw
Bosworth (uncredited)
Arthur Mullard
Chief Borstal Officer (uncredited)
Philip Martin
Stacy (uncredited)
John Brooking
Green (uncredited)
Raymond Dyer
Gordon (uncredited)
Anthony Sagar
Fenton (uncredited)
Peter Kriss
Scott (uncredited)
Peter Madden
Mr. Smith (uncredited)
Dallas Cavell
Lord Jaspers (uncredited)
James Cairncross
Mr. Jones (uncredited)
Frank Finlay
Booking Office Clerk (uncredited)
Robert Percival
Tory Politician (uncredited)
Ray Austin
Harry Craig (uncredited)
Derek Fowlds
Borstal Inmate (uncredited)
Billy Murray
Borstal Inmate (uncredited)
Ernest Blyth
Army Officer at Sports Day (uncredited)
Jim Brady
Man in Cafe (uncredited)
John Bull
Ronalds (uncredited)
Peter Duguid
Doctor (uncredited)
Charles Dyer
Bit Part (uncredited)
Edward Fox
Extra (uncredited)
Brian Hammond
Johnny Smith - Colin's Brother (uncredited)
William Ash Hammond
Johnny Smith - Colin's Brother (uncredited)
Victor Harrington
Army Officer at Sports Day (uncredited)
Aileen Lewis
Sports Day Spectator (uncredited)
Fred Machon
Borstal Master at Meeting (uncredited)
Philip Martin
Stacy (uncredited)
Anita Oliver
Alice Smith - Colin's Sister (uncredited)
Christopher Parker
Bill Smith - Colin's Brother (uncredited)
Joe Phelps
Borstal Master in Workshop (uncredited)
Corin Redgrave
Spectator at Sports Day (uncredited)
Doug Robinson
Prison Warder (uncredited)
Robert Vossler
Plainclothes Policeman (uncredited)
John Wilder
Ranley Headmaster (uncredited)
Chris Williams
Ranley Boy (uncredited)
