I always think of comedy as being spontaneous, and yet everything about filmmaking is not spontaneous.

I walk around talking to myself in accents. Usually people look at me like I'm a complete fruit loop.

I'm quite ignorant about fashion and I'm colourblind, so it's all a tad tricky. My only knowledge of that world comes through Christopher Bailey, whom I first met in 2008 when I did a campaign for Burberry that featured musicians, artists, actors and sportsmen.

And you can't complain about kissing Emma Watson. Isn't that what everyone in the world wants to do? I've known Emma for a few years. She's this amazing capacity of young and vibrant and brilliant, but also a bright, intelligent old soul.

I'm as voyeuristic and intrigued as the next person as to how celebrities live.

If you've loved something and then in some ways you become a part of it, you just don't want to be the one that screws it up!

Learning lines is hard for me because I have the attention span of a six year old. That's why being on planes all the time is so useful - I'm forced to learn out of boredom.