Rachel Weisz as Deborah Lipstadt

Tom Wilkinson as Richard Rampton

Timothy Spall as David Irving

Andrew Scott as Anthony Julius

Jack Lowden as James Libson

Caren Pistorius as Laura Tyler

Alex Jennings as Sir Charles Gray

Harriet Walter as Vera Reich

Mark Gatiss as Professor Robert Jan van der Pelt

John Sessions as Prof. Richard Evans

Nikki Amuka-Bird as Libby Holbrook

Pip Carter as Anthony Forbes-Watson

Jackie Clune as Heather Rogers

Will Attenborough as Thomas Skelton Robinson

Max Befort as Nik Wachsman

Daniel Cerqueira as Sam Glass

Laurel Lefkow as Storm Glass

Elliot Levey as Roger Levy

Helen Bradbury as Rachel Levy

Jacob Krichefski as Rabbi Brenner

Abigail Cruttenden as Janine Stone

Hilton McRae as Judge John Trench

Andrea Deck as Leonie

Lachele Carl as Gloria

Edward Franklin as Simon

Sally Messham as Meg

Sean Power as Mitch

Tom Clarke Hill as Sam Dixon

Amber Batty as Kate Kelland

Paul Hunter as Judge's Clerk

Amanda Lawrence as Court Usher

Ziggy Heath as Gerald

Todd Boyce as Reporter

Sara Powell as Reporter

Nicholas Tennant as Angry Man

Jeremy Paxman as Himself (Archive Footage)

Paul Bailey as Paralegal #1 (uncredited)

Laura Evelyn as Maureen

Ian Bartholomew as TV Historian