Julie Walters talks Potter

"I've only got, like, half an inch of lines on 'Harry' but in the other three films there's a lot more," Walters reveals. Her character "becomes his kind of surrogate mother in the other films", the fiftysomething adds.

The British actress is strongly tipped to receive an Oscar nomination for best supporting actress next Tuesday, for her role in 'Billy Elliot', and she's predicting big things for her young stars in the 'Harry Potter' movies.

Daniel Radcliffe plays the title character, and Walters inimitably calls him "gorg [gorgeous]. They chose very carefully and very well with the children. If you're with them for months on end, they've gotta be fairly special."