Tom Hardy
as James Keziah Delaney
Jonathan Pryce
as Sir Stuart Strange
Oona Chaplin
as Zilpha Geary
David Hayman
as Brace
Leo Bill
as Benjamin Wilton
Richard Dixon
as Edmund Pettifer
Edward Hogg
as Michael 'Godders' Godfrey
Michael Kelly
as Dr. Edgar Dumbarton
Franka Potente
as Helga von Hinten
Jessie Buckley
as Lorna Bow
Stephen Graham
as Atticus
Jefferson Hall
as Lieutenant Thorne Geary
Jason Watkins
as Solomon Coop
Nicholas Woodeson
as Robert Thoyt
Mark Gatiss
as Prince Regent
Tom Hollander
as Dr. George Cholmondeley
Edward Fox
as Horace Delaney
Lucian Msamati
as George Chichester
Marina Hands
as Countess Musgrove