I've done a couple of fan conventions and [the fans] are legion. They're rather like Star Wars or Star Trek fans. We're very glad of the loyal fans - but it's a strange way to spend your life, dressing up like Star Wars. At least we change our costumes - I don't spend 40 years dressed up as Tywin Lannister.

I'm playing one of the principal roles, which gives you more clout and more confidence.

It's a question of keeping one's eyes and ears open and watching how other people play the game. They're watching me too, to see what my attitude is like.

But the quality of writing in the series [game of Thrones] is paramount. That's probably why all of us are involved in this and all of us are quite so loyal to it, because we don't have to expend a lot of energy trying to make a silk purse out of a pig's ear. The quality of the writing is really good, and that's what makes playing a character so enjoyable, whether he's heroic or villainous.

A car to pick me up every day, a chair with my name on it, everybody being very polite... what can you do except sit back and watch it all, try to take it all in?

Most films are written and made with a hero around 35, or even 25.

There is a huge fan base, they're very knowledgeable and very loyal. I was astonished - before I started working on the series I didn't know anything about Game of Thrones. I hadn't heard of the books. When it started going out, people were coming up to me in the street saying [fake cockney accent] "oh, Game of Thrones, f------ wonderful.