London is the sporting capital of the world. I say to the Chinese and I say to the world, ping pong is coming home.

Volunteering is also now more crucial than ever in helping people find work.

The job of mayor of London is unbelievably taxing, particularly in the run-up to the Olympics.

Remind me: who was the greater mass murderer, Stalin or Hitler? Well, Stalin is thought to have been responsible for about 50 million deaths, and Hitler for a mere 25 million. What Hitler did in his concentration camps was equalled if not exceeded in foulness by the Soviet gulags, forced starvation and pogroms. What makes the achievements of communist Russia so special and different, that you can simper around in a CCCP T-shirt, while anyone demented enough to wear anything commemorating the Third Reich would be speedily banged away under the 1986 Public Order Act?

So I'm definitely in favour of stimulating the dynamic wealth creation sectors of the economy.

My point is that this Potter business has legs. It will run and run, and we must be utterly mad, as a country, to leave it to the Americans to make money from a great British invention. I appeal to the children of this country and to their Potter-fiend parents to write to Warner Bros and Universal, and perhaps, even, to the great J K herself. Bring Harry home to Britain-and if you want a site with less rainfall than Rome, with excellent public transport, and strong connections to Harry Potter, I have just the place.

In 1904, 20 per cent of journeys were made by bicycle in London. I want to see a figure like that again. If you can't turn the clock back to 1904, what's the point of being a Conservative?