I am fussy, about my diet and straining my voice. I know, sounds a bit over the top. But I'm not as bad as I used to be. These days I don't drink alcohol for five days before a show - very dehydrating for the vocal cords, and all that acid reflux. I used to ban it for a fortnight. Nightmare.

People see you sing in a certain way, in a long dress, and you are put on a pedestal like you have never made a mistake in your life.

I go home and don't get treated any differently. People have known me all my life and are interested and very supportive but because they have known me forever I don't get any diva treatment. My mum still tells me off if I haven't loaded the dishwasher for her.

I can't leave the studio until everything is as it should be. And I can't put a record out unless I am completely happy with it. I never want to be at a signing and hear my album playing and think, 'Oh no, I could have done that top note better.'

I'm over the moon to be involved in the 'Doctor Who' Christmas special. I can't quite believe it as it's a part of the family tradition at the Jenkins household. I heard the news that I got the role on my 30th birthday and it was the best birthday present ever.

My music appeals in America. There is less of the purist criticism I get here. And to be a hit in the U.S... what singer doesn't have that dream?

I want to have kids. I want to get married. That is still very important to me.