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

Gilbert Harding

Henry Truethome

James Kenney

Johnny Fagan

Liam Redmond

Connolly

Jack MacGowran

Patsy McGuire

Michael Golden

Murphy

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)

Harry Hutchinson

Bill - Detective (uncredited)

Doris Yorke

English Landlady (uncredited)

Patricia Stewart

Girl at Docks (uncredited)

Johnnie Schofield

ARP Warden (uncredited)

Jean St. Clair

Rosie O'Flaherty (uncredited)

Seamus Kavanagh

Publican (uncredited)

Jack Rodney

IRA Driver (uncredited)

Edward Byrne

Ambulance Attendant (uncredited)

Tony Quinn

Ambulance Attendant (uncredited)

E.J. Kennedy

Telephone Exchange Official (uncredited)

John Warwick

Prisoner's Escort on Ship (uncredited)