Detective Inspector at Shipping Office
Studd
Goddard
Lucien Cortier
Colonel Layton
Insp. Lodge
Carter
Det. Insp. Carter
Inspector
Gregory
Robert Brierly
Midshipman Young
Frank Drayton
Johnnie Clayton
Clive Sherrington
Cmdr. Chambers
Nick Bryan
Inspector Cobley
John Marsden
Carley
Inspector Jim Moss (uncredited)
George Grant
Frank Jamieson
Dr. Worksop
Shaw
(uncredited)
Prisoner's Escort on Ship (uncredited)
Inspector Raynor
Recruiting Officer
John Halifax
Milligan, Reporter in Fleet Street Pub
Insp. Gray
Donald Clark
Sergeant Gurney
Police Superintendent
Security Chief Brice (uncredited)
Bennett
Robson
Eddie 'Babyface' Fallon
Pete Hanken
George Davenport
Norman (uncredited)
Bryant, manager of the Sportadrome
Jim Carey
Inspector Langdon
Dr. Bricars
Sir Adrian Gillespie