Harry Potter and the Deathly Hallows.

Daniel Radcliffe: I can say to myself to be in relatively good shape so far this film could make me a lot of fit and healthy because it's some serious running, climbing, jumping everything.

Emma Watson: We are running through the forest we're being chased by snatches and it's going to be a very exciting sequence to watch. It was incredible camera which is like a zip wire basically and the camera can move at an incredible speed.

David Yates: They got action and they go whoosh and they run like maniacs and it's because they want to have compete each other, Dan wants to run faster than Emma and Emma wants to run faster than Dan and Rupert just wants to be anywhere to try and keep up with the both of them.

Rupert Grint: I didn't realize I was going to be the fastest I was just keeping all the time with Emma, but we work on quite quick.

Emma Watson: All three of us will be saying I was the fastest, and we want to race to settle it once in and for all.

Daniel Radcliffe: I'm faster than Emma, it could be, there is not even a question, red carpet next premier but I have right spot, make a hundred yards I'll do it.