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
John Thaw
Bosworth
Arthur Mullard
Chief Borstal Officer
Philip Martin
Stacy
John Brooking
Green
Raymond Dyer
Gordon
Anthony Sagar
Fenton
Peter Kriss
Scott
Peter Madden
Mr Smith
Dallas Cavell
Lord Jaspers
James Cairncross
Mr Jones
Frank Finlay
Booking Office Clerk
Robert Percival
Tory Politician
Ray Austin
Craig
Derek Fowlds
Borstal Inmate
Billy Murray
Borstal Inmate (uncredited)