Matt and Tom Felton participated in an interview that aired yesterday on BBC Radio One, can be heard in the middle of the show from 1:06 to 1:17, via the BBC iPlayer.

Here are some snippets:

Matt Lewis: There’s no fat suit this year, that much I can tell you. They got rid of the fat suit and it’s good for Neville this year, actually. Again, I’m not going to give too much away, but we’ve had some really cool stuff. The set’s kind of like a set from “Saving Private Ryan” that we’re working on, like D-Day.
Tom Felton: It’s epic and again, without revealing too much, Matt has some fantastic stuff. It’s heroic, I’d even go as far as saying it’s heroic. Heroic and even iconic.

Presenter: Have you ever been suspended or had detention at school?
Tom Felton: Yes.
Matt Lewis: I’ve had detention, but never been suspended.
Tom Felton: But one was for dyeing my hair blond! They suspended me for dyeing my hair blond. I couldn’t believe that.

Thanks TLC!

UPDATE: Added a full transcript to the Press Archive.