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.

You don’t want to be the one people say: “Great, great, great” to and then turn round and think: “S***, s***, s***.”’‘I only really started to feel I was being just Daniel Radcliffe in 2012, and it started when I made Kill Your Darlings [the critically acclaimed indie movie in which he plays tortured young Beat poet Alan Ginsberg] followed by Horns and What If.

Radcliffe’s acting choices have been – as he intends – both brave and unorthodox.

‘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...

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.

'Doing (Harry) Potter was an incredible blessing because it gave me this opportunity to start a fantastic career.The pair have been dating for three years and met on the set of Kill Your Darlings, with Radcliffe playing Allen Ginsberg.It figures that when every girl is starstruck at the sight of you -- as is the case for Radders -- the only way to meet a girl properly is on a movie set.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."Dustin Hoffman and Tom Cruise have very different careers, and they're both about the same height as I am," he points out. The minimum height for a marine is five feet, and I'm well above that. "I wouldn't be able to take myself seriously as the quarterback in a football movie, which is my one legitimate gripe," he surprisingly says. The only part I would get is the general manager." Though Radcliffe acknowledges that he'll probably always be known for his -- specifically, that one time he got an accidental erection. "It's not great when you're in a professional acting environment and somebody gets a boner, is it?