Sean Bean

John Marlott

Richie Campbell

Joseph Nightingale

Ed Stoppard

Lord Daniel Hervey

Tom Ward

Sir Robert Peel

Eloise Smyth

Flora

Vanessa Kirby

Lady Jemima Hervey

Anna Maxwell Martin

Mary Shelley

Samuel West

Sir William Chester

Kate Dickie

Mrs Bishop

Frank Blake

Constable Bircher

Martin McCann

Renquist

Guy Henry

Dean of Westminster

Laurence Fox

Frederick Dipple

Maeve Dermody

Esther Rose

Paul Kennedy

Inspector Treadaway

Kerrie Hayes

Queenie

Aaron Kelly

Sam

Claire Rafferty

Mrs. Flynn

Terence Keeley

Whitlock

Francis Magee

Spence

Phill Martin

Thomas

Lily Lesser

Ada Byron

Claire Benedict

Mrs. Wild

Robbie Gee

Billy Oates

Gerard Jordan

Constable Westbrook

Roma Tomelty

Jane Smith

Chris Coghill

Blackwood

Chris Robinson

Fox

Victoria Emslie

Automaton

Ian McElhinney

Dr. Lenox

Louise Parker

Tatty

Luke Griffin

Dr. Meecham

Andrew Havill

Reverend Ambrose

Anthony Morris

Matthews (uncredited)

Kit Connor

Joey

Nigel O'Neill

Reverend Crane

Niall Cusack

King William IV

Gerard Byrne

Newspaper Editor

Ciaran Nolan

Edgar

Frank McCusker

Dr. Kane

Laura Hughes

Shelly's Neighbor

Steven O'Neill

Apothecary

John Heathwood

Ghost

Jonathan Gunning

Syphilis Patient

Barrie Gower

Prosthetic Designer

Alex Gabassi

Director

Will Reade

Second Assistant Sound

Paul Tomalin

Writer