Leslie Banks as John Barrington

Jeanne De Casalis as Mrs. Barrington

Carla Lehmann as Helen Barrington (as Carla Lehman)

Alastair Sim as Charles Dimble

John Mills as Flt·Lieut. Perry

George Cole as Ronald

Michael Wilding as Alan Trently

Frank Cellier as John Forest

Muriel Aked as Miss Fernery

Wally Patch as Evans

Muriel George as Mrs. Trimm

Hay Petrie as Dr. Truscott

Catherine Lacey as Mrs. Stokes

Annie Esmond as Lady Wrapping Parcels For The Bazaar (uncredited)

Peter Gawthorne as Senior RAF Officer (uncredited)

Arthur Hambling as Scotland Yard Inspector (uncredited)

Roddy Hughes as German Agent (uncredited)

Sydney King as Ministry Official (uncredited)

Brefni O'Rorke as Scottish Police Inspector (uncredited)

Charles Rolfe as German Agent (uncredited)

Sydney Tafler as RAF Officer (uncredited)

Ben Williams as Scottish Fisherman (uncredited)