David Jason
The BFG (voice)

Amanda Root
Sophie (voice)

Angela Thorne
Elizabeth II (voice)

Ballard Berkeley
Head of the Army (voice)

Michael Knowles
Head of the Air Force

Don Henderson
Bloodbottler / Fleshlumpeater / Sergeant (voice)

Mollie Sugden
Mary (voice)

Frank Thornton
Mr. Tibbs (voice)

Myfanwy Talog
Mrs. Clonkers (voice)

Jimmy Hibbert
Additional voices

Sharon Campbell
The Balladeer (voice)