John Laurie as Peter Manson

Belle Chrystall as Ruth Manson

Eric Berry as Robbie Manson

Kitty Kirwan as Jean Manson

Finlay Currie as James Gray

Niall MacGinnis as Andrew Gray

Grant Sutherland as John, the Catechist

Campbell Robson as Mr. Dunbar, the Laird

George Summers as Trawler Skipper

Michael Powell as Mr. Graham - the Yachtsman (uncredited)

Frankie Reidy as The Yachtswoman (uncredited)