When London Sleeps

Harold French

Tommy Blythe

Francis L. Sullivan

Rodney Haines

Rène Ray

Mary

A. Bromley Davenport

Colonel Graham

Alexander Field

Sam

Diana Beaumont

Hilda

Ben Field

Lamberti

Herbert Lomas

Pollard

David Butler

Doctor

Barbara Everest

Madame Lamberti

James Knight

Garnett

Harry Adnes

Jerry Balvern

Henry B. Longhurst

Inspector Bradley

Sam Wilkinson

Guy Renton

Jack Harris

Editor

H. Fowler Mear

Writer

Leslie S. Hiscott

Director

Julius Hagen

Producer

Baynham Honri

Sound Recordist

Basil Emmott

Director of Photography

W.L. Trytel

Music

James A. Carter

Art Direction

Gilbert Church

Presenter

Bernard Merivale

Writer

Charles Darrell

Theatre Play

Fred V. Merrick

Assistant Director

Frederick White

Presenter