Performance capture is a tool that young actors will need in the next 10, 20 years. It's on the increase, as you say. It's not going away.

My sons have to learn that you take the rough with the smooth and they've seen a lot of smooth in the years that they've been around. They didn't see the early years. But both my mum and myself are actors and we constantly tell them it's not easy. But they understand that.

'The Hobbit' was one of the first biggish books I ever read. I remember vividly the 'riddles in the dark' passage, and it meant a lot to me to finally get to play it after all these years.

Not a day goes by where I'm not reminded of Gollum by some person in the street who asks me to do his voice or wants to talk to me about him. But because 'The Hobbit' has been talked about as a project for many years, I knew that at some point I'd have to reengage with him.

But that's not what an actor does. An actor finds things in the moment with a director and other actors that you don't have time to hand-draw or animate with a computer.

In a personal way, to do with family and the father-son relationship, in a kind of artistic way with regard to him being an art student. I also studied the visual arts at Lancaster University. I then decided to become an actor as he was becoming a musician. And then as an actor/performer, we have similar sort of interests - music hall and that whole world. So, there's a lot that I felt connected with.

That's why I ended up going to Lancaster University, because they had a visual arts course, and in the first year it was like a broad visual arts course in sculpture, painting, graphics - all of that.