'I have a female partner. I don't talk about it very much because I don't feel I need to. 'And there's something too about how meteoric my career has been. I am generally calm, almost serene. I don't get easily stressed or battered.' she added: 'But I need a bit of stability to do that, and that means my private life is my private life. 'That's the thing I just have to have that nobody gets to touch, and that gives me the strength to be calm elsewhere.'It is the first time she has revealed any intimate details about her private life..