John Mills
Role: Terence Sullivan
Dirk Bogarde
Role: Matt Sullivan
Robert Beatty
Role: Shinto
Elizabeth Sellars
Role: Maureen Fagan
Barbara Mullen
Role: Molly Fagan
Joseph Tomelty
Role: Dr Brannigan
Gilbert Harding
Role: Henry Truethome
James Kenney
Role: Johnny Fagan
Liam Redmond
Role: Connolly
Jack MacGowran
Role: Patsy McGuire
Michael Golden
Role: Murphy
Neil Wilson
Role: Police Constable at Tube Station (uncredited)
Stephen Dunne
Role: Brennan (uncredited)
Patric Doonan
Role: Sentry (uncredited)
John Orchard
Role: Sentry (uncredited)
Terence Alexander
Role: Ship's Officer (uncredited)
Harry Brogan
Role: Barney (uncredited)
Harry Hutchinson
Role: Bill - Detective (uncredited)
Doris Yorke
Role: English Landlady (uncredited)
Patricia Stewart
Role: Girl at Docks (uncredited)
Johnnie Schofield
Role: ARP Warden (uncredited)
Jean St. Clair
Role: Rosie O'Flaherty (uncredited)
Seamus Kavanagh
Role: Publican (uncredited)
Jack Rodney
Role: IRA Driver (uncredited)
Edward Byrne
Role: Ambulance Attendant (uncredited)
Tony Quinn
Role: Ambulance Attendant (uncredited)
E.J. Kennedy
Role: Telephone Exchange Official (uncredited)
John Warwick
Role: Prisoner's Escort on Ship (uncredited)