Ioan Gruffudd

William Wilberforce

Michael Gambon

Lord Charles Fox

Albert Finney

John Newton

David Hunt

Lord Camden

Ciarán Hinds

Lord Tarleton

Toby Jones

Duke of Clarence

Michael Apted

Director

Benedict Cumberbatch

William Pitt

Rufus Sewell

Thomas Clarkson

Jeremy Swift

Richard the Butler

Bill Paterson

Lord Dundas

Nicholas Farrell

Henry Thornton

Georgie Glen

Hannah More

Richard Ridings

Speaker of the House

Tom Fisher

John Ramsay

Duncan Reid

Executive Producer

Romola Garai

Barbara Spooner

Youssou N'Dour

Olaudah Equiano

Sylvestra Le Touzel

Marianne Thornton

Stephen Campbell Moore

James Stephen

Nicholas Day

Sir William Dolben

Nicholas Woodeson

Harrison

David Toole

Beggar

Alex Blake

Heckler

Angie Wallis

Marjorie

Harry Audley

Edward Hope (Quaker)

Steven Knight

Writer

James Clayton

Executive Producer

Jeanney Kim

Executive Producer