Carelessness makes me cross. And unkindness.

I knew a homeless guy who'd give all the copper coins that people gave him to charity. So I think there's something that makes us want to give. For me, it's quite a selfish luxury: you feel enlivened, deepened and self-nurtured by generosity.

I am interested in shows that are not out-and-out gag fests: you see the truth of a broken heart behind them. That is what life is like: it's really funny, you see funny things as soon as you step out of the room, but underneath that is a whole bag of broken hearts. It's that real pain and that real hilarity that makes life so intriguing.

Dad was a retired chemist who, in his 60s, fathered and fed me and my two sisters while Mum worked as a secretary. He made us curries, Chinese meals and strange concoctions. He was often unsuccessful.

I cannot step into any day without help. I have a fantastically engaged husband who is very present for his children and our family life. We've got a brilliant nanny, other help from parents-in-law, godparents, friends. Also, I've had incredible women around me in the business.

I always said there's no way I'd work in America because I'm too weird and I'm too old, but somehow it's happened.