which is exactly what I did.’Radcliffe says Harry Potter haunted him in other ways.Although he acknowledges that winning the role of the boy wizard was the movie equivalent of winning a Willy Wonka golden ticket to fame and fortune, there were many times Radcliffe could barely watch himself on screen.

But I wanted to make choices that would surprise people and I wanted to be good.’ Alongside Emma Watson (Hermione) and Rupert Grint (Ron Weasley), Radcliffe became the most famous child star in the world, frozen in time, like an Andy Warhol painting, as the boyishly bespectacled Harry.

To be fair, between the ages of 18 and 20 Radcliffe did almost go off the rails, drinking himself into blackouts, having casual sex and – on occasions – turning up for work on the set of his latest Potter movie while still under the influence.

‘It felt more like there isn’t any blueprint for how to do this, get through this.

And the reason I spoke out about it was because I felt someone else would and I should take control...

‘James says that I definitely get top spot for what I did in Equus, which was effectively stand there completely naked for about ten minutes.

Ten minutes is a hell of a long time – and I was out there at the centre of the stage.'There’s nothing like doing a nude scene to put yourself under pressure.But honestly, it might look like I do but I don’t go round insisting that nudity clauses have to be put in my contract – I just happen to be getting it out a lot at the moment.’For Radcliffe, nudity was a way of freeing himself from Harry Potter, a role that defined him from the age of 11 when he was cast as the Hogwarts hero in what was to become the biggest movie franchise of all time.He admits that stripping off made people look at him in a completely different way: ‘I don’t know if I actually connected those thoughts.I always went along and sat with everyone else watching the movie.Radcliffe is now 25, clearly not cut out to be a rebel and it doesn’t take long to realise this when you meet him.The middle-class son of a literary agent (Alan) and casting agent (Marcia) cares too much about being liked, being good at his job and being a nice guy.