Radcliffe: I was 'reliant' on alcohol

Daniel Radcliffe has confessed he became "reliant" on alcohol when he was 18.

The 22-year-old actor – who shot to fame in 2001 when he first played the titular role in 'Harry Potter and the Philosopher's Stone’ - says he started drinking heavily while working on the sixth movie in the franchise, 'Harry Potter and the Half-Blood Prince', because it's what he thought he should do.