London has enjoyed an extraordinary period of growth in the past generation, symbolised by the towers of Canary Wharf built on the skeleton of the old docks. Finance had a lot to do with it, but its day is now over. The infrastructure-driven regeneration of Kings Cross and the Olympic boroughs show what the next stage of London's growth will look like, with an economy driven by accountants and geeks, not bankers. But the question is whether this more modest success will be enough for the next 30 years - and the answer depends on openness, improved global links (given that the capital's main airport is full to capacity) and decent housing for the people who live and work in London.