City of London Corporation City of London Corporation The City of London Corporation, officially and legally the Mayor and Commonalty and Citizens of the City of London, is the municipal governing body of the City of London, the historic centre of London and the location of much of the United Kingdom's financial sector. In 2006 the name was changed from Corporation of London to avoid confusion with the wider London local government, the Greater London Authority. The Corporation is probably the world's oldest continuously-elected local government authority. Both businesses and residents of the City, or "Square Mile", are entitled to vote in elections, and
City of London Bridge, Tower Bridge and the Millennium Bridge. The City's flag flies over Tower Bridge, although neither footing is in the City. The size of the City was constrained by a defensive perimeter wall, known as London Wall, which was built by the Romans in the late 2nd century to protect their strategic port city. However the boundaries of the City of London no longer coincide with the old city wall, as the City expanded its jurisdiction slightly over time. During the medieval era, the City's jurisdiction expanded westwards, crossing the historic western border of the original settlement—the River Fleet—along Fleet