Every so often I'll go back down to earth and I'll make reference to a phone or a house or something, something that's a bit more real. But I suppose what that does, is it puts you in a surreal place but also my music doesn't get too carried away in that sense, which I quite like.

It's so important to take vitamins. People always get ill on tour because of the close proximity in the bus with everyone.

I kind of just want to get to know people and I have a genuine interest in people that listen to my music. I've just always felt like that. I think it's from the days of playing guitar to a few people and being very conversational and very intimate and I've always wanted to keep that vibe.

I instinctively dress a bit tougher because I've spent a lot of time in the U.S. and I realised there was a certain image projected of me here. I've always been an absolute rebel. When I was in my teen years I had piercings and wore all black.

I met Prince William at a musical festival and he let me know he was a fan of my music. But the invitation to sing at his wedding reception came completely out of the blue. The fact that Kate and William knew the words to my songs was very touching.

I started getting these attacks in 2009, just as my music career was taking off. I'd be doing photo-shoots and started to feel like I was having heart attacks. Increasingly I found it difficult to step outside my flat. Things started to get better after I saw a therapist, who told me I needed to make peace with my panic attacks.

Cover versions, that's my forte, that's all I ever used to do. When you play your own songs, it's quite scary, 'cause I'm quite honest and open, they can be very revealing. But covers, I don't have to think about, just get me up there!