Richard Hannay

Sir Edmund Appleton

Chief Superintendent Lomas

Alex Mackenzie

Scudder

Sir Walter Bullivant

Bayliss

Marshall

Porton

David

Lord Rohan

Magistrate

Harkness

McLean

Tillotson

Fletcher

Lord Belthane

Woodville

Admiral

PC Forbes

Stewart

Renfrew

Donald

Martins

Lady Nettleship

Perryman

Milkman

Miller

The Scot

Crombie

Guide

PC Scott

Vicar

General (uncredited)

Nun (uncredited)