Clifford Evans as Fred Carrick

Constance Cummings as Anne Stafford

Tommy Trinder as Tommy Hoskins

Gordon Jackson as Alastair 'Jock' MacFarlan, 19th Fusillers

Robert Morley as Mayor Coutare of Bivary

Owen Reynolds as Collins, Burns & Fawcett Works Manager

Bill Blewitt as Aircraft Spotter on Works Roof

Charles Victor as Aircraft Spotter

John Williams as 'English' Army Captain

Anthony Ainley as Boy

Ronald Adam as Sir Charles Fawcett, Managing Director

Anita Palacine as La Tour Barmaid

Ernest Milton as Stationmaster in La Tour

Paul Bonifas as Prefect of Rouville

Francis L. Sullivan as French Skipper

Thora Hird as Barmaid

Mervyn Johns as Official, Passport Office

Eric Maturin as Older Man

John Boxer as Official