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
City of London College of Law has its London campus in Moorgate. Part of Barts and The London School of Medicine and Dentistry is on the Barts hospital site at West Smithfield. Libraries operated by the Corporation include three lending libraries; Barbican Library, Shoe Lane Library and Artizan Street Library and Community Centre. Membership is open to all – with one official proof of address required to join. Guildhall Library, and City Business Library are also public reference libraries, specialising in the history of London and business reference resources. Author and journalist Nicholas Shaxson argued that, in return for the financial institutions based