Guest Stars Lena Headey as Guinevere Sebastian Roché as Gawain Vernon Dobtcheff as 1st Physician Jason Done as Mordred Roger Ashton-Griffiths as Sir Boris John McEnery as Lord Ardente Daniel Brocklebank as Young Merlin Jeremy Sheffield as Lancelot Peter Woodthorpe as Soothsayer Timothy Bateson as Father Abbot Robert Addie as Sir Gilbert Emma Lewis as Elissa John Turner as Lord Lot Janine Eser as Lady Elaine Rachel Colover as Lady Igraine Justin Girdler as Young Galahad Alice Hamilton as Young Morgan le Fay Agnieszka Kozon as Young Nimue Nicholas Clay as Lord Leo Talula Sheppard as Lady Friend Keith Baxter as Sir Hector Billie Whitelaw as Ambrosia Paul Curran as Arthur John Tordoff as New Architect Peter Benson as 1st Architect Mark Jax as Uther Pendragon Nickolas Grace as Sir Egbert Peter Eyre as Chief Physician Thomas Lockyer as Cornwall Peter Bayliss as 2nd Physician
