Michael Redgrave as Ruxton Towers Reformatory Governor

Tom Courtenay as Colin Smith

Avis Bunnage as Mrs. Smith

Alec McCowen as Brown, House Master

James Bolam as Mike

Joe Robinson as Roach

Dervis Ward as Detective

Topsy Jane as Audrey

Julia Foster as Gladys

James Fox as Willy Gunthorpe - Ranley School Runner (uncredited)

John Thaw as Bosworth (uncredited)

Arthur Mullard as Chief Borstal Officer (uncredited)

Philip Martin as Stacy (uncredited)

John Brooking as Green (uncredited)

Raymond Dyer as Gordon (uncredited)

Anthony Sagar as Fenton (uncredited)

Peter Kriss as Scott (uncredited)

Peter Madden as Mr. Smith (uncredited)

Dallas Cavell as Lord Jaspers (uncredited)

James Cairncross as Mr. Jones (uncredited)

Frank Finlay as Booking Office Clerk (uncredited)

Robert Percival as Tory Politician (uncredited)

Ray Austin as Harry Craig (uncredited)

Derek Fowlds as Borstal Inmate (uncredited)

Billy Murray as Borstal Inmate (uncredited)

Ernest Blyth as Army Officer at Sports Day (uncredited)

Jim Brady as Man in Cafe (uncredited)

John Bull as Ronalds (uncredited)

Peter Duguid as Doctor (uncredited)

Charles Dyer as Bit Part (uncredited)

Edward Fox as Extra (uncredited)

Brian Hammond as Johnny Smith - Colin's Brother (uncredited)

William Ash Hammond as Johnny Smith - Colin's Brother (uncredited)

Victor Harrington as Army Officer at Sports Day (uncredited)

Aileen Lewis as Sports Day Spectator (uncredited)

Fred Machon as Borstal Master at Meeting (uncredited)

Philip Martin as Stacy (uncredited)

Anita Oliver as Alice Smith - Colin's Sister (uncredited)

Christopher Parker as Bill Smith - Colin's Brother (uncredited)

Joe Phelps as Borstal Master in Workshop (uncredited)

Corin Redgrave as Spectator at Sports Day (uncredited)

Doug Robinson as Prison Warder (uncredited)

Robert Vossler as Plainclothes Policeman (uncredited)

John Wilder as Ranley Headmaster (uncredited)

Chris Williams as Ranley Boy (uncredited)