I hope that any expansion of London will learn from the planning examples of some of its most desirable areas such as Chelsea, Notting Hill, Belgravia and Mayfair. All are characterised by high density and a generosity of green spaces. They are all pedestrian-friendly with shops, entertainment, restaurants and pubs within easy walking distance.

Architecture is an expression of values.

As an architect you design for the present, with an awareness of the past, for a future which is essentially unknown.

Manhattan, one of the most moneyed spots on the planet, also has one of the greatest concentrations of people in its skyscrapers. Its also, of course, the place where every architect wants to build his tower.

I would never wear anything with a logo. That I really find difficult. It's a frustration that I'll find a nice shirt or something and it's got 50 prints of the logo on it - why do they do this?

I was born in 1935, and as far back as I can remember, I was sketching designs. My first subject was an aircraft, which I imagined myself piloting.

I tend to move between turtlenecks and shirts and ties. I don't really have a uniform in the sense that some people might.