Clifford Evans

Headmaster Evans

Moultrie Kelsall

Superintendent

George A. Cooper

Chief Inspector

Brona Boland

Mary Murphy

Fergal Boland

Patrick Murphy

Michael Chow

Alexander

Tsai Chin

Primrose

Sean Lynch

Slick

Bernice Swanson

Meg

Freddie Starr

Tommy

Sheila Raynor

Mrs. Catlin

Christopher Cooke

David Catlin

Irene Arnold

Mrs. Baker

Oonagh Quinn

Jilly Baker

Ali Allen

Boy (uncredited)

Grace Arnold

Customer in Grocer's Shop (uncredited)

John Boxer

Police Sergeant (uncredited)

Jeremy Bulloch

Pageboy at Hotel (uncredited)

John Bush

(uncredited)

Michael Collins

Police Officer in Patrol Car (uncredited)

Keith Crane

William (uncredited)

Gerrard Gibson

(uncredited)

Victoria Harrington

Child (uncredited)

Melvyn Hayes

Kid in Johnnie's Gang (uncredited)

Lindsay Hooper

Police Sergeant (uncredited)

Robert Howell

(uncredited)

Anthony John

Child (uncredited)

Stratford Johns

Police Constable (uncredited)

Billy Lawrence

(uncredited)

Phyllis Morris

(uncredited)

Robert Raglan

Doorman at Grand Hotel (uncredited)

Philip Ray

Stallholder (uncredited)

Anthony Richmond

(uncredited)

Lynne Roberts

Maureen Owen

Delene Scott

(uncredited)

Cyril Shaps

Hairdresser (uncredited)

Jack Sharp

Mechanic (uncredited)

Leonard Sharp

Spectator at Fire (uncredited)

Leslie Slysz

(uncredited)

James Sutherland

(uncredited)

John Tatham

Police Sergeant (uncredited)

Anne Tirard

(uncredited)

Dervis Ward

Constable (uncredited)

Kathleen Williams

(uncredited)

Lynn Williams

(uncredited)

John H. Watson