Greater London is an administrative area in England governed by the Greater London Authority. It is organised into 33 local government districts: the 32 London boroughs and the City of London. Greater London is one of the regions of England, also known as the London Region. The Greater London Authority, based in Newham as of the start of 2022, is responsible for strategic local government across the area and consists of the Mayor of London and the London Assembly.
Greater London can also refer to a ceremonial county formed by the 32 London boroughs. It excludes the City of London, which forms a separate ceremonial county.
Greater London was first established in 1965 as a sui generis council area and ceremonial county under the Greater London Council on 1 April 1965 through the London Government Act 1963. The GLC was abolished in 1986. In 1994, the area was established as a government office region called "London". The Greater London Authority was formed in 2000.
The region covers 1,572 km2 (607 sq mi) and had a population of just over 9 million. In 2018 the estimated population surpassed 9 million. Other areas, such as the London metropolitan area and Greater London Urban Area, are used in some national statistics for London, including areas outside this administrative region.
Greater London lacks any formal recognised city status in the UK, though the local authorities of the City of Westminster and the City of London have official city status.
As a ceremonial county, Greater London has a Lord-Lieutenant and a High Sheriff, both appointed by the British monarch, but Greater London is not one of England's historic counties. Greater London is split between parts of the historic counties of Middlesex, Essex, Surrey, Kent and Hertfordshire.