Aidan McArdle

as Einstein

Anton Lesser

as Voltaire

Andrew Callaway

as Maupertuis

Julian Rhind-Tutt

as Antoine Lavoisier

Shirley Henderson

as Mileva Maric

Ty Glaser

as Marie Anne Lavoisier

Andy Crabbe

as Habicht

Samuel West

as Humphry Davy

Daniel D'Alessandro

as Algarotti

Brendan Fleming

as Hermann Einstein

Gregory Fox-Murphy

as Brande

Philip Herbert

as Count de Amerval

Chris Jenkinson

as Dr. Haller

Wolf Kahler

as Horlein

George Layton

as Emilie’s Father

Alex Macqueen

as Chater

Richard Mulholland

as Emilie’s Tutor

Stephen Noonan

as Marat

Christopher Eccleston

as Narrator (voice)

John Lithgow

as Narrator (voice) U.S. edition

Steven Robertson

as Michael Faraday

Christian Rubeck

as Otto Hahn

Emily Woof

as Lise Meitner

Ian Duncan

as Charles de Breteuil

James Tovell

as Manson