The drama brings together a cast of acclaimed British actors (Richard Wilson as Gaius,
Anthony Head as King Uther Pendragon) as well as exciting new faces.
Colin Morgan is the young wizard Merlin, Bradley James is
the arrogant but brave Prince Arthur, rising star Angel Coulby is Guinevere and newcomer
Katie McGrath is Morgana.
Multi-award-winning actor John Hurt has just been cast as
the Voice of the Great Dragon. Enigmatic and powerful, he alone knows Merlin's true
destiny.
Julie Gardner, Head of Drama, BBC Wales, says: "In
this new version, Merlin and Arthur are young contemporaries for the first time ever,
bringing a much-loved tale to a whole new generation with a fresh, youthful new look and
approach for Saturday nights this autumn on BBC One.
"I am thrilled to announce John Hurt has just been
cast as the voice of the Great Dragon. He is Merlin's mythological mentor and the only
dragon left with magic powers.
"It is an absolute privilege to be working with him,
as he brings real gravity to the series, alongside a strong core cast and brilliant
guests."
He will be joined by Heroes star Santiago Cabrera as
Lancelot and Bionic Woman Michelle Ryan as the wicked sorceress Nimueh.