Jack Hawkins as Wolf Merton

George Cole as John Summers

Dennis Price as Leonard Pirry

Michael Medwin as Ginger Edwards

Hugh Williams as Tim

George Baker as Adjutant

Michael Ripper as Mechanic

Duncan Lamont as Don Cope

Arthur Howard as Bertram Slake

Nicholas Phipps as Regular Officer

Campbell Singer as War Office Clerk

Robert Adair as Luigi

Richard Wattis as School Master

Dora Bryan as Dora Bee

Gene Anderson as June Maple

David Horne as General

Patrick Barr as Inspector Williams

Edward Chapman as Lowden

Susan Shaw as Tina

Harold Lang as Bill

Eric Berry as 1st Detective

Bruce Beeby as 2nd Detective