City of London
The City of London is a small area within Greater London, England. It is the historic core of London around which the modern conurbation grew and has held city status since time immemorial. The City’s boundaries have remained almost unchanged since the Middle Ages, and it is now only a tiny part of the metropolis of London, though it remains a notable part of central London. It is often referred to as the City (often written on maps as "City") or the Square Mile, as it is just over one square mile (1.12 sq mi/2.90 km2) in area. These terms are also often used as metonyms for the United Kingdom's financial services industry, which continues a notable history of being based in the City.
In the medieval period, the City was the full extent of London. The term London now refers to a much larger conurbation roughly corresponding to Greater London, a local government area which includes 32 London boroughs as well as the City of London. The local authority for the City, the City of London Corporation, is unique in the United Kingdom, and has some unusual responsibilities for a local authority in Britain, such as being the police authority for the City. It also has responsibilities and ownerships beyond the City's boundaries. The Corporation is headed by the Lord Mayor of the City of London, an office separate from (and much older than) the Mayor of London.
The City is today a major business and financial centre, ranking above New York City as the leading centre of global finance; throughout the 19th century, the City served as the world's primary business centre, and continues to be a major meeting point for businesses to this day. London came top in the Worldwide Centres of Commerce Index, published in 2008. The other major financial district in London is Canary Wharf, 2.5 miles (4.0 km) to the east.
The City has a resident population of around 10,000, but around 330,000 people work there, mainly in the financial services sector. The legal profession forms a major component of the western side of the City, especially in the Temple and Chancery Lane areas; these are where the Inns of Court are located, of which two - Inner Temple and Middle Temple- fall within the City of London boundary.