When I Was 10 - actor Thomas Sangster

Last updated at 11:10

You'll recognise him from films like Love Actually, Nanny McPhee and most recently Phineas and Ferb.

Newsround caught up with Thomas Sangster when he was promoting his new film to find out what his life was like when he was 10 years old.

Watch the clip to find out what Thomas' nickname used to be and he tells us about the trouble he caused on film sets.