Tourism

London is a popular centre for tourism, one of its prime industries, employing the equivalent of 350,000 full-time workers in 2003 while annual expenditure by tourists is around £15 billion.^[ London attracts over 14 million international visitors per year, making it Europe's most visited city. London attracts 27 million overnight-stay visitors every year In 2010 the ten most-visited attractions in London were:

1. British Museum

2. Tate Modern

3. National Gallery

4. Natural History Museum

5. Imperial War Museum

6. Science Museum

7. Victoria and Albert Museum

8. Madame Tussauds

9. National Maritime Museum

10. Tower of London

Housing crisis

Thousands of homeless families find themselves stuck in emergency accommodation for at least two years.^[] A growth in the number of UK households has led to the homeless charity Shelter stating: "This growth is a result of people living longer, more people living alone or in smaller households, and net migration.

Transport

Transport is one of the four main areas of policy administered by the Mayor of London,^[211] however the mayor's financial control does not extend to the longer distance rail network that enters London. In 2007 he assumed responsibility for some local lines, which now form the London Overground network, adding to the existing responsibility for the London Underground, trams and buses. The public transport network is administered by Transport for London (TfL) and is one of the most extensive in the world.

The lines that formed the London Underground, as well as trams and buses, became part of an integrated transport system in 1933 when the London Passenger Transport Board or London Transport was created. Transport for London is now the statutory corporation responsible for most aspects of the transport system in Greater London, and is run by a board and a commissioner appointed by the Mayor of London.