Derrick O'Connor

Detective Ritchie

Gary Holton

Ken

Richard Thomas

Leo Turner

Peter Clark

Mike Simmonds

Gwyneth Strong

Jan, Ken's Girlfriend

Caroline Embling

Susan, Leo's Sister

Jack Douglas

Senior Police Officer

Billy Colvill

Williams

P.H. Moriarty

Police 1

Richard Hope

Police 2

Niall Padden

Police 3

John Mulcahy

Police 4

Terry Paris

Police 5

Neil Cunningham

School Masters 1

George Costigan

School Masters 2

Stewart Harwood

School's Security Guard

Tammi Jacobs

School 1

Daniel Peacock

School 2

Paul Mari

School 3

Mel Smith

Disco Doorman

C.P. Lee

Club Manager

Jimmy Hibbert

Disco 3

Kim Taylforth

Disco 4

Nula Conwell

Ken's Gang 1

Madeleine Church

Ken's Gang 2

Pete Lee-Wilson

Ken's Gang 3 (as Peter Wilson)

Gary Olsen

Ken's Gang 4

Jesse Birdsall

Ken's Gang 5

Roger Lloyd Pack

Hospital Doctor

Brenda Fricker

Nurse

June Watson

Nurse

Colin Campbell

Conductor

Julian Hough

Reporter

Geraldine James

Ritchie's Wife

Richard Beckinsale

Detective Ritchie (uncredited; Died before filming completed)

Jane Gurnett

Girl at Police Station (uncredited)