John Mills as George Boswell

Martha Scott as Olivia

Patricia Roc as Julie Morgan

Trevor Howard as Dr. Richard Whiteside

Richard Carlson as Charles Winslow / Charles Winslow Sr.

Reginald Tate as Trevor Mangin

Beatrice Varley as Annie

Frederick Leister as John Channing

Ivor Barnard as Spivey

Julian D'Albie as Wetherall

Juliet Mills as Young Julie

Roddy Hughes as Chief Librarian

John Turnbull as Morris

Lyonel Watts as Mayor

Kathleen Boutall as Woman

James Hilton as Narrator (voice)

Joan Hickson as Mother (uncredited)

Howard Lang as Man Attending Royal Opera House (uncredited)