Greater London in the context of "BBC Radio London"

London is the capital and largest city of both England and the United Kingdom, with a population of 9.1 million people in 2024. Its wider metropolitan area is the largest in Western Europe, with a population of 15.1 million. London stands on the River Thames in southeast England, at the head of a 50-mile (80 km) tidal estuary down to the North Sea, and has been a major settlement for nearly 2,000 years. Its ancient core and financial centre, the City of London, was founded by the Romans as Londinium and has retained its medieval boundaries. The City of Westminster, to the west of the City of London, has been the centuries-long host of the national government and parliament. London grew rapidly in the 19th century, becoming the world's largest city at the time. Since the 19th century the name "London" has referred to the metropolis around the City of London, historically split between the counties of Middlesex, Essex, Surrey, Kent and Hertfordshire, which since 1965 has largely comprised the administrative area of Greater London, governed by 33 local authorities and the Greater London Authority.

As one of the world's major global cities, London exerts a strong influence on world art, entertainment, fashion, commerce, finance, education, healthcare, media, science, technology, tourism, transport and communications. London is Europe's largest city economy and one of the world's major financial centres. London hosts Europe's largest concentration of higher education institutions, comprising over 50 universities and colleges and enrolling more than 500,000 students as at 2023. It is home to several of the world's leading academic institutions: Imperial College London, internationally recognised for its excellence in natural and applied sciences, and University College London (UCL), a comprehensive research-intensive university, consistently rank among the top ten globally. Other notable institutions include King's College London (KCL), highly regarded in law, humanities and health sciences; the London School of Economics (LSE), globally prominent in social sciences and economics; and specialised institutions such as the Royal College of Art (RCA), Royal Academy of Music (RAM), the Royal Academy of Dramatic Art (RADA), the School of Oriental and African Studies (SOAS) and London Business School (LBS). It is the most-visited city in Europe and has the world's busiest city airport system. The London Underground is the world's oldest rapid transit system.

The City of London (often known as the City or the Square Mile) is a city, ceremonial county and local government district in England. Established by the Romans around 47 AD as Londinium, it forms the historic centre of the wider London metropolis. Surrounded by the modern ceremonial county of Greater London, from which it remains separate, the City is a unique local authority area governed by the City of London Corporation, which is led by the Lord Mayor of London; although it forms part of the region governed by the Greater London Authority.

Nicknamed the Square Mile, the City of London has an area of 1.12 sq mi (716.80 acres; 2.90 km), making it the smallest city in the United Kingdom. It had a population of 8,583 at the 2021 census, however over 500,000 people were employed in the area as of 2019.

Greenwich (/ˈɡrɛnɪtʃ/ GREN-itch, /-ɪdʒ/ -⁠ij, /ˈɡrɪn-/ GRIN-) is an area in south-east London, England, within the ceremonial county of Greater London, 5.5 miles (8.9 km) east-south-east of Charing Cross.

Greenwich is notable for its maritime history and for giving its name to the Greenwich Meridian (0° longitude) and Greenwich Mean Time. The town became the site of a royal palace, the Palace of Placentia, from the 15th century and was the birthplace of many Tudors, including Henry VIII and Elizabeth I. The palace fell into disrepair during the English Civil War and was demolished, eventually being replaced by the Royal Naval Hospital for Sailors, designed by Sir Christopher Wren and his assistant Nicholas Hawksmoor. These buildings became the Royal Naval College in 1873, and they remained a military education establishment until 1998, when they passed into the hands of the Greenwich Foundation. The historic rooms within these buildings remain open to the public; other buildings are used by the University of Greenwich and Trinity Laban Conservatoire of Music and Dance.

The Blue Banana (Dutch: blauwe banaan; French: banane bleue; German: Blaue Banane; Italian: banana blu), also known as the European Megalopolis or the Liverpool–Milan Axis, is a discontinuous corridor of urbanization in Western and Central Europe, with a population of around 100 million. Over time, the region has been referred to by several names, each reflecting its development and significance. Initially, French geographer Roger Brunet, as the leader of RECLUS (Network for the study of changes in locations and spatial units), described the area as 'the European Backbone', which depicted an urban corridor extending from Liverpool to Milan.

Characterized by significant industrialization and urbanization, this area has attracted numerous public and private enterprises since the early post-war period, prompting researchers and academics to investigate the factors behind its remarkable development within Europe. It stretches approximately from North West England through the English Midlands across Greater London to the European Metropolis of Lille, the Benelux states with the Dutch Randstad and the Flemish Diamond and along the German Ruhrgebiet, Rhineland, Southern Germany, Alsace-Moselle in France in the west and Switzerland (Basel and Zürich), Austria (Vorarlberg and Tyrol) to Northern Italy (Milan, Turin, and Genoa) in the south.

Chelsea is an area in West London, England, due south-west of Charing Cross by approximately 2.5 miles (4 km). It lies on the north bank of the River Thames and for postal purposes is part of the south-western postal area.

Chelsea historically formed a manor and parish in the Ossulstone hundred of Middlesex, which became the Metropolitan Borough of Chelsea in 1900. It merged with the Metropolitan Borough of Kensington, forming the Royal Borough of Kensington and Chelsea upon the creation of Greater London in 1965.

The Lady Mayor of London is the mayor of the City of London, England, and the leader of the City of London Corporation. Within the City, the Lady Mayor is accorded precedence over all individuals except the sovereign and retains various traditional powers, rights, and privileges, including the title and style The Right Honourable Lady Mayor of London.

One of the world's oldest continuously elected civic offices, it is entirely separate from the directly elected mayor of London, a political office controlling a budget which covers the much larger area of Greater London. Dame Susan Langley serves as the 697th Lord/Lady Mayor (for 2025–2026).

The River Thames (/tɛmz/ TEMZ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At 215 miles (346 km), it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn.

The river rises at Thames Head in Gloucestershire and flows into the North Sea near Tilbury, Essex and Gravesend, Kent, via the Thames Estuary. From the west, it flows through Oxford (where it is sometimes called the Isis), Reading, Henley-on-Thames and Windsor. The Thames also drains the whole of Greater London.

The City of Westminster is a London borough with city status in Greater London, England. It is the site of the United Kingdom's Houses of Parliament and much of the British government. It contains a large part of central London, including most of the West End, such as the major shopping areas around Oxford Street, Regent Street, Piccadilly and Bond Street, and the entertainment district of Soho. Many London landmarks are within the borough, including Buckingham Palace, Westminster Abbey, Whitehall, Westminster Cathedral, 10 Downing Street, and Trafalgar Square.

The borough also has a number of major parks and open spaces, including Hyde Park, and most of Regent's Park. Away from central London the borough also includes various inner suburbs, including St John's Wood, Maida Vale, Bayswater, Belgravia and Pimlico. The borough had a population of 204,300 at the 2021 census.

Middlesex (/ˈmɪdəlsɛks/ ; abbreviation: Middx) was one of the counties of England until it was abolished in 1965. The county boundaries largely followed three rivers: the Thames in the south, the Lea to the east and the Colne to the west, with a line of hills forming its northern boundary with Hertfordshire. The former area of Middlesex now lies almost entirely in the ceremonial county of Greater London, with smaller parts in the counties of Hertfordshire and Surrey. The county was the second smallest of the historic counties of England, after Rutland.

The name of the county derives from its origin as a homeland for the Middle Saxons in the early Middle Ages, with the county subsequently part of that territory in the ninth or tenth century. The City of London, formerly part of the county, became a self governing county corporate in the twelfth century; the City was still able to exert influence as the sheriffs of London maintained their jurisdiction in Middlesex, though the county otherwise remained separate. To the east of the City, the Tower Division (or Tower Hamlets) had considerable autonomy under its own Lord Lieutenant. To the west, precincts around Westminster and Charing Cross became built up.

Essex (/ˈɛsɪks/ ESS-iks) is a ceremonial county in the East of England. It is bordered by Cambridgeshire and Suffolk to the north, the North Sea to the east, Kent across the Thames Estuary to the south, Greater London to the south-west, and Hertfordshire to the west. The largest settlement is Southend-on-Sea.

The county has an area of 3,670 km (1,420 sq mi) and had an estimated population of 1,929,610 in 2024. The south of the county is densely populated, and includes Southend-on-Sea in the south-east and Basildon in the south-centre. The centre and north of the county is more rural, and its principal settlements include Chelmsford in the centre and Colchester in the north-east. The districts of Chelmsford, Colchester and Southend hold city status. For local government purposes Essex comprises a non-metropolitan county, with twelve districts, and two unitary authority areas: Thurrock and Southend-on-Sea. The county historically included north-east Greater London, the River Lea forming its western border.