Greater London is often referred to as "the City" or "the Square Mile" and it forms the main financial district. Archaically, the urbanised area of London was known as the Metropolis. In common usage, the terms "London" and "Greater London" are usually used interchangeably. Greater London is officially divided for some purposes, with varying definitions, into Inner London and Outer London. For some strategic planning purposes it is divided into five sub-regions. Greater London is under the strategic local governance of the Greater London Authority (GLA). It consists of an elected assembly, the London Assembly, and an executive head, the Mayor of
History of London History of London The history of London, the capital city of England and the United Kingdom, extends over 2000 years. In that time, it has become one of the world's most significant financial and cultural capital cities. It has withstood plague, devastating fire, civil war, aerial bombardment, terrorist attacks, and riots. The City of London, often referred to simply as "the City", is the historic core of the Greater London area, and is today its primary financial district, though it represents only a small part of the wider metropolis. According to the legendary "Historia Regum Britanniae", by Geoffrey of Monmouth,