There's a snobbery at work in architecture. The subject is too often treated as a fine art, delicately wrapped in mumbo-jumbo. In reality, it's an all-embracing discipline taking in science, art, maths, engineering, climate, nature, politics, economics.

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.

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?

Control is the wrong word. The practice is very much about sharing, and, in any creative practice, some individuals, whether partners or directors, are much closer to certain projects than I could ever be.

Architecture is an expression of values.

Google has already tested robot cars in San Francisco. If they can navigate San Francisco, they can probably manage just about anywhere.

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