What are the most important things that the Shard does for London?
Bringing attention back to Southwark. I thought this was a good idea from [former mayor] Ken Livingstone, that you balance the energy of the City by putting something strong on the south bank, in the more poor part of the city. If you are driving around, bicycling around, walking around, you have a new orientation point. I receive many messages from people about this: it is a kind of lighthouse in London. It is quite a surprising element, and providing surprise and wonder is not essential, but it is not a bad thing to do.
It will be the first publicly accessible tall building in London. You have others, but they are not as accessible as this. We have been talking about this from the beginning – making a vertical city, one that does not shut its doors in the evening, that is alive 18 hours a day.
It will change with the weather. I always thought this tower will be a sensor of the city, reflecting the mood. What the Shard does for London is a list of things. I was aware of risks with the project when I took it on, but the best things in life are always a little dangerous.