I have always said the success of the show has stemmed from our audience being able to relate to the characters on different levels - being based on the universally loved Arthurian legend is only a tiny part of its success - it's a story about acceptance and growing up. The breathtaking finale of this series leaves you with no doubt that characters have been on their journeys and had their stories told - it's completely the right time to draw our telling of the story to a close.
