I read as much as I could, but really just spoke to Chris Chibnall and asked all the pertinent questions. That made me feel like we weren't going to do an off-the-peg Camelot, which has been touched upon in many films and TV series before. I really just picked his brain and, in doing so, I got fired up by tackling Merlin in a fresher angle.

It all felt like a terribly long time. It would have meant that I had to make five movies in five years and if you don't like the movies, too bad. I guess I just wanted my freedom, and I think my life has been incredibly enhanced as a result.

he challenge is finding the modern conduit for the audience, having fun and really looking at the duality of this particular character, that is both devil and angel, and on the cusp of losing control of the pagan background, to this newfangled religion called Christianity. There's a great backdrop there, and just a whole dark side with the magic.

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.

Merlin is really at the forefront, in that regard. We get a glimpse into the dark, Machiavellian corridors of power. I like the fact that, although he has powers, his powers are almost in his political guile as much as what he relies on, in darker forces.

I don't know what my limitations are until I reach them. I look for the challenge.