Will Hay

Prof. Davis

John Mills

Bobby Jessop

Basil Sydney

Costello

Felix Aylmer

Crabtree

Thora Hird

Joyce

Henry Hewitt

Prof. Davys

Owen Reynolds

Harman

Frank Cellier

Innsbach

Joss Ambler

Sir John

Frank Allenby

Onslowe

Margaret Halstan

Matron

Barbara Valerie

Sister Spooner

Leslie Mitchell

B.B.C. Interviewer

George Woodbridge

Male Nurse

George Merritt

Station Master

Basil Dearden

Will Hay