Cast from Breaking the Mould

Dominic West

Howard Florey

Denis Lawson

Alexander Fleming

Joe Armstrong

Norman Heatley

John Sessions

Edward Mellanby

Kate Fleetwood

Margaret Jennings

Stephen Boxer

Arthur Gardner

Amanda Douge

Ethel Florey

Sam Heughan

Charles Fletcher

Peter McNeil O'Connor

Mr. Cox

Oliver Dimsdale

Ernst Chain