It's always at the back of my mind that acting might come to an end for me when Harry Potter finishes. I don't know if I'm good enough to have a long career. I've got a bit of an inferiority complex about my acting. My self-esteem is quite low in that sense.

Ron was always my favorite character, because I feel like I relate to him, like we've both got red hair, we both like sweets, we've both got lots of brothers and sisters.

They were just kind of simultaneous - the film ending and the sets being destroyed. I was struck the first time I saw the Great Hall become a big pile of burning rubble and getting scattered around. It's really quite shocking for the fans.

I've known Emma Watson since she was 9, we've watched each other grow up, formed this sort of brother/sister bond, and suddenly I'm leaning in to kiss her. Well, it felt completely wrong... but, you know, you try to sink into the character and divorce yourself from it. We ended up laughing hysterically afterwards.

We had a script reading, and that's where we met J.K. Rowling, which was really exciting.