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
Central line (London Underground) it is the only Tube line running east–west through the central core of London, running under Oxford Street and the financial centre of the City of London. Crossrail, due to begin most of its core operation in autumn 2019 with full service by the end of 2019, will provide interchange with the Central line at Stratford, , , and Ealing Broadway, relieving overcrowding in these areas. The Central London Railway (CLR) was given permission in 1891 for a tube line between Shepherd's Bush and a station at Cornhill, and the following year an extension to Liverpool Street was authorised, with