Robert Donat as Sir Robert Morton

Cedric Hardwicke as Arthur Winslow

Margaret Leighton as Catherine Winslow

Basil Radford as Desmond Curry

Kathleen Harrison as Violet

Francis L. Sullivan as Attorney General

Marie Lohr as Grace Winslow

Jack Watling as Dickie Winslow

Walter Fitzgerald as First Lord

Frank Lawton as John Watherstone

Neil North as Ronnie Winslow

Nicholas Hannen as Col. Watherstone

Mona Washbourne as Miss Barnes

Stanley Holloway as Comico

Wilfrid Hyde-White as Wilkinson

Evelyn Roberts as Hamilton MP

W.A. Kelley as Brian O'Rourke

Edward Lexy as First Elderly Member

Vera Cook as Violet's friend

Hugh Dempster as

Gordon McLeod as

Ivan Samson as

Kynaston Reeves as

Charles Groves as

Ernest Thesiger as

Cyril Ritchard as

Lewis Casson as

Colin Gordon as

Mary Hinton as

David Horne as

Noel Howlett as

Aubrey Mallalieu as

Dandy Nichols as

Philip Ray as

Bill Shine as

Frank Tickle as

Margaret Withers as