On the plane the other day, there was man who was wearing a tank top, shorts and Birkenstocks - and I don't think that's acceptable. First class should have a f - ing dress code. It's not about money. It's about education. When you build an environment where people can study well, they'll work better. If you teach people to dress correctly, to take personal hygiene seriously, when we teach them about culture, they will be greater.

When you're my age, you'll see that it is wiser to make your own decisions than let time make decisions for you.

I'm always jealous of people in the fashion business, especially women. I always feel like they look so light and chic. They figure out how to wear the minimal sort of outfit, whether it be the Prada uniform or a T-shirt with perfect-fitting Levi's and Birkenstocks.

Are you going to give a speech?' she asked gaily. He gave a choked laugh. 'Of course not,' he said. 'Not for ages.' 'My cousin Davey gave one on his very first day!' ... 'In the Lords, I remember. It was about how he didn't like strawberry jam.' 'Be nice, Charles! It was a speech about fruit importation, which I admit devolved into something of a tirade.' She couldn't help but laugh. 'Still, you could talk about something more important.' 'Than jam? Impossible. We mustn't set the bar too high, Jane.

The big challenge is a suit not worn with a tie. To me, it's a very odd look. David Cameron and many of our British politicians have adopted this look. I think it is challenging for men to look chic in casual clothing. Most people just want to wear T-shirts and baggy shorts and don't really care, whereas in the old days people used to really dress well in their leisure time. The suit has become a victim of that. day to dress in an appropriate way.

When I was younger I always had a dark navy, black tie and everybody would look at me like it was odd, but now it is de rigueur. I'm sure it's my input.

I don't think taste is about money. As your career develops, you're able to decide what to spend your money on. I live in a really small apartment in London, and that's a choice. I live at The Carlyle in New York, but it's not big. It's about making choices of style over flashiness. People's style is subjective and mine happens to be around the classical because I feel comfortable with that, and because of my background. I'm probably living in the wrong time. I should have lived in the Thirties or the Fifties.