Howard Florey

Dominic West

Alexander Fleming

Denis Lawson

Norman Heatley

Joe Armstrong

Edward Mellanby

John Sessions

Margaret Jennings

Kate Fleetwood

Arthur Gardner

Stephen Boxer

Ethel Florey

Amanda Douge

Charles Fletcher

Sam Heughan

Mr. Cox

Peter McNeil O'Connor

Ernst Chain

Oliver Dimsdale

Director

Peter Hoar

Original Music Composer

Benjamin Wallfisch

Writer

Kate Brooke