Greater London is a ceremonial county of England that makes up the majority of the London region. It is also a region of England that can also be known as the London region. The London region can also be counted as part of South East region. It is bounded by Hertfordshire to the north, Berkshire and Buckinghamshire to the west, Kent to the southeast and Surrey to the south and southwest.
In 2018, the estimated population surpassed 9 million.
The term Greater London has been and still is used to describe different areas in governance, statistics, history and common parlance.
The London region does not have city status granted by the Crown. The Cities of London and Westminster within it have received formal city status. Despite this, Greater London is commonly regarded as a city in the general senses of a conurbation and a municipality. The term "London" usually refers to the region or to the conurbation, but not often to the ancient, tiny City of London. That small area is often referred to as "the City" or "the Square Mile" and it forms the main financial district.