I do not understand where the idea came from that opera is only for privileged people, I am as happy singing before 70,000 people at the Millennium Stadium, as I am in front of a few hundred in a small concert hall.

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.

Confidence is one of the sexiest things.

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.

Yes. I do about 70 shows a year, in the past year I've been to Italy, Australia, Japan, China, just about everywhere. I do it because I love singing. The money is a bonus.

I really see myself as a homegirl. Wales is my first home. London is my second home - I've been there 14 years now.

People perceive opera and classical as elitist - I disagree. I've always tried to mix the two, make it more accessible.