Tom Gamble as Nobby Clark

Edward Rigby as Joe Clark

Jean Gillie as Nancy

Michael Wilding as Dick

Marion Gerth as Mimi

Mavis Villiers as Blondi

John Salew as Henri

Henry B. Longhurst as Admiral Drake

G.H. Mulcaster as Admiral Reynolds

Dennis Wyndham as Captain Raleigh

Ian McLean as First C.I.D. Man

Joan Hickson as Woman Carried Ashore

Jack Raine as Hotel Manager (uncredited)