David Macaulay

as Self / Host / Narrator

Caroline Berg

as Self

Derek Jacobi

as Pierre (voice)

Geoffrey Matthews

as Bishop Philippe / Dean of the Chapter (voice)

Brian Blessed

as Master Guillaume (voice)

Paul Bacon

as Merchant Thibaut (voice)

Sean Barrett

as Bishop Gervais / Chapter Member (voice)

Peter Pacey

as Friar Roland / Robert of Cormont (voice)

Ellis Jones

as Ansel (voice)