John Mills

Terence Sullivan

Dirk Bogarde

Matt Sullivan

Robert Beatty

Shinto

Elizabeth Sellars

Maureen Fagan

Barbara Mullen

Molly Fagan

Eddie Byrne

Flynn

Joseph Tomelty

Dr Brannigan

James Kenney

Johnny Fagan

Liam Redmond

Connolly

Jack MacGowran

Patsy McGuire

Neil Wilson

Police Constable at Tube Station (uncredited)

Stephen Dunne

Brennan (uncredited)

Patric Doonan

Sentry (uncredited)

John Orchard

Sentry (uncredited)

Terence Alexander

Ship's Officer (uncredited)

Harry Brogan

Barney (uncredited)

Johnnie Schofield

ARP Warden (uncredited)

Jean St. Clair

Rosie O'Flaherty (uncredited)