(Image: Getty)

Daniel Radcliffe hasn't had a drink since 2010 but has opened up about his problems with alcohol on the set of Harry Potter.

"I have a very addictive personality. It was a problem," he told Heat magazine. "People with problems like that are very adept at hiding it. It was bad. I don't want to go into details, but I drank a lot and it was daily - I mean nightly."

Daniel said the problem was never so bad that he was drinking at work, but it still affected his performance.

"I can honestly say I never drank at work on Harry Potter. I went into work still drunk, but I never drank at work. I can point to many scenes where I'm just gone. Dead behind the eyes."

"I became so reliant on alcohol to enjoy stuff," he explained. "There were a few years there when I was just so enamored with the idea of living some sort of famous person's lifestyle that really isn't suited to me."

Daniel has been very forthcoming in interviews recently. He also just went on the record saying he likes girls with a bit of, um, bush "down there" if you know what I mean.