Dr. Andrew Manson

Robert Donat

Christine Manson

Rosalind Russell

Dr. Philip Denny

Ralph Richardson

Dr. Frederick Lawford

Rex Harrison

Owen

Emlyn Williams

Mrs. Orlando

Mary Clare

Toppy LeRoy

Penelope Dudley-Ward

Ben Chenkin (as Francis Sullivan)

Francis L. Sullivan

Dr. Charles Every

Cecil Parker

Mrs. Thornton

Nora Swinburne

Joe Morgan

Edward Chapman

Lady Raebank

Athene Seyler

Mr. Boon

Felix Aylmer

Nurse Sharp

Joyce Bland

Mr. Stillman

Percy Parsons

Mrs. Page

Dilys Davies

Dr. Page

Basil Gill

Dr. A.H. Llewellyn

Joss Ambler

Man Who Buys Microscope (uncredited)

Cameron Hall

Medical Aid Society Committee Member (uncredited)

Bernard Miles

Doctor (uncredited)

Kynaston Reeves

Husband Whose Wife Has Typhoid (uncredited)

Bryan Herbert

Josephine Wilson

Mr. Wickes (uncredited)

David Keir

Nurse Assisting at Childbirth (uncredited)

Joan Kemp-Welch

Haidee Wright

Charles Quartermaine

Jack the Pharmacist (uncredited)

Eliot Makeham

Angela Baddeley

Tom Evans (uncredited)

Gus McNaughton

Bombardier Billy Wells

Girl (uncredited)

Leslie Phillips

Miner (uncredited)

Harry Terry

Jane Barrett

Old Thomas (uncredited)

D.J. Williams