Nicholas Hoult
J.R.R. Tolkien

Lily Collins
Edith Bratt

Colm Meaney
Father Francis Morgan

Derek Jacobi
Professor Joseph Wright

Harry Gilby
Young J.R.R. Tolkien

Mimi Keene
Young Edith Bratt

Anthony Boyle
Geoffrey Bache Smith

Adam Bregman
Young Geoffrey Bache Smith

Patrick Gibson
Robert Q. Gilson

Albie Marber
Young Robert Q. Gilson

Tom Glynn-Carney
Christopher Wiseman

Ty Tennant
Young Christopher Wiseman

Craig Roberts
Private Sam Hodges

Pam Ferris
Mrs. Faulkner

James MacCallum
Hilary Tolkien

Guillermo Bedward
Young Hilary Tolkien

Laura Donnelly
Mabel Tolkien

Genevieve O'Reilly
Mrs. Smith

Owen Teale
Headmaster Gilson

Al Bollands
First Soldier