Youth is a predominant factor. We are seeing a young King Arthur, and thereby a young-ish - as I'm into my 40s - Merlin. It was about how to tackle it, from that point view.

'How do you balance the creative with the biblical?' One could pick up the scripture and read it to oneself and you would be communing directly with that information. As soon as you go into film, as soon as there's a camera, and there's an angle, and there's lighting, and there's editing, you're into the adaptation.

I guess there's nothing I don't like about Merlin, in this presentation. I love everything, even the things I find despicable and abhorrent in Merlin. They're actually a joy to ride on the tailcoats of.

I also wanted to have fun with it. I wanted to have the scope, which I felt Merlin has, in his Machiavellian bi-polar way. He's not to be trusted, yet he is fighting for this great power and is really a master, to some degree, in orchestrating Camelot and King Arthur. He's a strange, dark devious character, and I just wanted to have fun, and get away from the cloak and long beard and pointy hat.

There are a couple of films that I've done, where I've had to get on a horse and wear a pair of tights, so that helped. But, nothing could have prepared me for the fun of wielding magic like Merlin does, especially in the perverted mind of Chris Chibnall.

I love life. I'm fascinated by human behavior because that feeds back into my work.

From the age of about five to twelve I was very bad, a hideous little terror who beat people up. I was a member of a Rough Gang - we went around and terrorised all the pupils in school.