Young Arthur

Julian Morris

— Arthur

James Fleet

— Merlin

Paul Wesley

— Lancelot

James Hoare

— Kay

Jo Stone-Fewings

— Jack

Stephen Billington

— Lord Vortigen

Laura Rees

— Morgana

David Birkin

— Mordred

Desmond Barrit

— Bullwhit

Marc Small

— Heflin

Tony Maudsley

— Aloysius

Clive Swift

— Illtud

Nick Brimble

— Pelinore

Patrick Gordon

— Grimthorpe

Christian Burgess

— Ector

James Babson

— Monk

Conrad Mendelius

— Maltby of Thistledown