City of London Since 1991 Canary Wharf, a few miles east of the City in Tower Hamlets, has become another centre for London's financial services industry which houses many banks and other institutions formerly located in the Square Mile. Although growth has continued in both locations, and there have been relocations in both directions, the Corporation has come to realise that its planning policies may have been causing financial firms to choose Canary Wharf as a location. Many major global companies have their headquarters in the City, including Aviva, BT Group, Lloyds Banking Group, Old Mutual, Prudential, Schroders, Standard Chartered, and Unilever. A
Flag of the City of London it is hanging down (see below). This flag does not represent Greater London (which does not have its own flag, aside from the banner of the arms of the former Greater London Council), only the historical City of London which covers approximately . All references in this article relate to that city, not Greater London, unless specified. The flag is a banner of arms, derived from the city's coat of arms with the sword symbolising the sword that beheaded Saint Paul who is the patron saint of the city. Saint Paul has featured as a symbol of the city since