The Admirable Crichton (1957)

Lord Loam has modern ideas about his household, he believes in treating his servants as his equals - at least sometimes. His butler, Crichton, still believes that members of the serving class should know their place and be happy there. But when the Loam family are shipwrecked on a desert island with the self-reliant Crichton and lady's maid Tweeny, the class system is put to the test.