John Mills

Character: John Hampden

Yvonne Mitchell

Character: Mrs. Stella Hampden

Alastair Sim

Character: Dr. Skillingworth

Jeremy Spenser

Character: L. W. Daventry

Andrew Ray

Character: Max Hampden

Peter Asher

Character: Johnny Hampden

Marie Lohr

Character: Grandmother

Sonia Williams

Character: Miss Betts

James Drake

Character: Kirkland