Lovingly ripped off from the classic film comedy Monty Python and the Holy Grail, Spamalot is making a triumphant return to the London West End, at the Harold Pinter Theatre. Featuring Jon Culshaw as King Arthur, Marcus Brigstock as Sir Lancelot, Bonnie Langford as The Lady of the Lake and Todd Carty as Patsy. Picture shows Jon Culshaw and Todd Carty.