Guest Stars Russell Kane as Himself Iain Stirling as Himself Aisling Bea as Guinevere Tom Rosenthal as Harold Abrahams Stephanie Pratt as Lady of the Lake Ben Hardy as Arthur Adam Foster as Journalist Tom Bennett as Eric Liddell Kadiff Kirwan as Knight Mark Davison as Merlin Matthew Steer as Scipio Africanus "Sam" Mussabini Rufus Hound as God Javone Prince as Mordred Ciarán Dowd as Lancelot Lucy Middleditch as 8 Year old Girl
