Deborah Kerr as Bridie Quilty

Trevor Howard as Lt. David Bayne

Raymond Huntley as J. Miller

Michael Howard as Hawkins

Liam Redmond as Uncle Timothy

Brefni O'Rorke as Michael O'Callaghan

James Harcourt as Grandfather Edwards

George Woodbridge as Walter

Garry Marsh as Capt. Goodhusband

Olga Lindo as Mrs Edwards

Tom Macaulay as Lt Spanswick

David Ward as Oscar Pryce

Harry Hutchinson as Chief Mourner

Eddie Golden as Terence Delaney

Marie Ault as Mrs O'Mara

Humphrey Heathcote as Sgt. Harry Harris

John Salew as Man in the Bookshop

David Tomlinson as Intelligence Officer

Kenneth Buckley as Radio-Telephone Operator

Torin Thatcher as Police Constable

Everley Gregg as 1st Woman on Train

Kathleen Boutall as 2nd Woman on Train

Pat Leonard as Liverpool Hotel Receptionist

Katie Johnson as Old Lady on Train

Gerald Case as Col. Dennington

W.G. O'Gorman as Danny Quilty

Frank Atkinson as Soldier in Pub (uncredited)

Dorothy Bramhall as ATS Corporal

Brenda Bruce as American Waitress (uncredited)

Peter Cotes as Brash Young Man

Bob Elson as Policeman (uncredited)

Josephine Fitzgerald as 2nd Irishwoman

Cameron Hall as Tynwald Court Usher (uncredited)

Joan Hickson as Hotel Manageress

Austin Meldon as Customs Officer

Kathleen Murphy as 1st Irishwoman

Doreen Percherson as Manx Hotel Receptionist

Norman Pierce as Dance M.C.

Tony Quinn as Galley Guide

Albert Sharpe as Irish Publican

Jim Winters as Irish Policeman

Harry Webster as Uncle Joe

Norman Shelley as Man in Straw Hat

Clifford Buckton as Plainclothes Man on Train (uncredited)

Eddie Byrne as Irish Sailor Lookout (uncredited)

Hugh Dempster as Train Passenger (uncredited)

Arthur Denton as Mr. Cloggerty (uncredited)

Howard Douglas as Guest at Birthday Party (uncredited)

Leslie Dwyer as Soldier in Café (uncredited)

Kathleen Harrison as Waitress (uncredited)

Peter Jones as Soldier in Pub (uncredited)

Patricia Laffan as Bit Part (uncredited)

Frank Ling as Soldier in Pub (uncredited)

Johnnie Schofield as Villager (uncredited)

Vi Stevens as Hotel Floor Cleaner (uncredited)

Harry Terry as Irish Smuggler (uncredited)

John Vere as Bit Part (uncredited)

Jack Vyvyan as Village Postman (uncredited)