Number of Londoners who work in creative industries -- second to, but gaining on, finance.

Percentage of Londoners who were born outside the U.K.

Average number of foreigners who immigrate to London per year.

Proportion of Londoners aged under 45.

Projected annual growth rate of London's GDP over the next 12 years.

Number of international travelers who passed through London Heathrow in 2007, making it the busiest international airport in the world.

London's rank among European business capitals, in a survey of senior executives. It has been No. 1 for 18 years.

The British government's budget for the 2012 Olympic games.

Amount the games will add to London's GDP over the next five years.

Portion of London that is green or open space, compared with 14% of New York.