I like all films whether it's dark or light, love, hate, whatever it is, I enjoy it.
I'd have to just say that working with other people, it's a different world from school.
When I was 9 or 10 years old it wasn't the thing to be seen doing - reading a book in your spare time.
A nice pop star would do you nice on one of those deserted islands.
When you're playing a character for 10 years, it can challenge you less than it did at the beginning, so it was exciting to take on some new shoes. Especially with Erich Blunt, because being a tech wizard wasn't something I thought I would do after Harry Potter.
If someone tried to take the hierarchy thing too seriously - for example, being lovely to producers but moaning to runners about the tea - that would not be accepted on 'Harry Potter'; someone would pull you aside and have a word.