We needed to make a sound that's not gonna fit in with everything else - we wanted to make something that was completely unique and individual to us. We spent a lot of time trying to make a sound that was a One Direction sound. At first it was quite hard to do that, but I'm really happy with the sound.

When fans start screaming when they see me it makes my heart smile.

My trademark saying is probably “VAS HAPPENIN?!”

Smile doesn't mean that someone is happy. Sometimes it just means that you're strong.

I'm a massive fan of Drake, and we walked right past him. He's too cool to be clapping One Direction though.

We didn't really expect to achieve anything outside of the UK, and it just went crazy. It's just crazy that people know our music. We're just humbled by it.

I'm always drawing, so Draw Something is a cool game to play against your friends when you're bored and sat chilling out and relaxing.