London Underground

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.

During the 19th century, London grew enormously to become a global city of immense importance. It was the largest city in the world from about 1825, the world's largest port, and the heart of international finance and trade. Railways connecting London to the rest of Britain, as well as the London Underground, were built, as were roads, a modern sewer system and many famous sites.

London has an extensive and developed transport network which includes both public and private services. Journeys made on its integrated transport network account for 37% of London's journeys while private services accounted for 36% of journeys, walking 24% and cycling 2%, according to numbers from 2017. London's public transport network serves as the central hub for the United Kingdom in rail, air and road transport.

Public transport services are dominated by the city's executive agency for transport, Transport for London (TfL). TfL controls the majority of public transport, including the Underground, Buses, Tramlink, the Docklands Light Railway, London River Services, Elizabeth line and the London Overground.

A train ticket is a transit pass ticket issued by a railway operator that enables the bearer to travel on the operator's network or a partner's network. Tickets can authorize the bearer to travel a set itinerary at a specific time (common for long-distance railroads), a set itinerary at any time (common for commuter railroads), a set itinerary at multiple times, or an arbitrary itinerary at specific times. The last two categories are often called passes: the former is often sold as a discounted block of trips for commuters; the latter is often sold to vacationers, such as European Eurail passes.

In some countries, like Italy, and some local railways in Germany, conductors are not used. Instead passengers are expected to validate tickets in a special stamping machine before entering the train. A system of coupons that are validated with a special machine exists on the Mumbai Suburban Railway where combinations of coupons of denominations are used to get the corresponding ticket value. There may or may not be a conductor later on double-checking that correct tickets are actually held. Yet further systems are possible, for example in Japan, the London Underground and in local traffic in Stockholm, the platforms are blocked by turnstiles, forcing the acquisition of a ticket before entering the platform.

This list of metro systems includes electrified rapid transit train systems worldwide. In some parts of the world, metro systems are referred to as subways, undergrounds, tubes, mass rapid transit (MRT), metrô or U-Bahn. As of 6 October 2025, 205 cities in 65 countries operate 920 metro lines.

The London Underground first opened as an underground railway in 1863 and its first electrified underground line, the City and South London Railway, opened in 1890, making it the world's first deep-level electric metro system. The Budapest Millennium Underground Railway, which opened in 1896, was the world's first electric underground railway specifically designed for urban transportation and is still in operation today. The Beijing Subway is both the world's longest metro network at 879 kilometres (546 mi) and the busiest with the highest annual ridership reaching approximately 2.83 billion passenger trips. The Beijing Subway has the greatest number of stations, with 424. As of 2024, the country with the most metro systems is China, with 54 in operation, including 11 of the 12 longest networks in the world.

Line 1 (Officially: Millennium Underground Railway, Metro 1 or M1) is the oldest line of the Budapest Metro, built from 1894 to 1896. It is known locally as "the small underground" ("a kisföldalatti"), while the M2, M3 and M4 are called "metró". It was the first electrified underground on the European mainland, and the world's second oldest electrified underground after the London Underground. It was finished by April 1896 and was inaugurated by the emperor of Austria-Hungary, Franz Joseph on 3 May 1896.

Line 1 runs northeast from the city center on the Pest side under Andrássy út to the Városliget, or City Park. Like Line 3, it does not serve Buda. Its daily ridership is estimated at 80,000.

High Holborn (/ˈhoʊbərn/ HOH-bərn) is a street in Holborn and Farringdon Without, Central London, which forms a part of the A40 route from London to Fishguard. It starts in the west at the eastern end of St Giles High Street and runs past the Kingsway and Southampton Row, becoming Holborn at its eastern junction with Gray's Inn Road. The western stretch, as far as Drury Lane, was formerly known as Broad Street. On High Holborn, traffic (including cycles and buses) flows one-way westbound from its junction with Drake Street to its western end, and flows both ways for the remainder.

The nearest London Underground stations are Tottenham Court Road, Holborn, and Chancery Lane, all on the Central line which runs beneath High Holborn.

The railway system in Great Britain is the oldest railway system in the world. The first locomotive-hauled public railway opened in 1825, which was followed by an era of rapid expansion. Most of the track is managed by Network Rail, which in 2024 had a network of 9,848 miles (15,849 km) of standard-gauge lines, of which 3,810 miles (6,130 km) were electrified. In addition, some cities have separate metro, light rail and tram systems, among them the historic London Underground and the Glasgow Subway. There are also many private railways, some of them narrow-gauge, which are primarily short lines for tourists. The main rail network is connected with that of continental Europe by the Channel Tunnel and High Speed 1, opened in 1994 and 2007 respectively.

In 2024, there were 1.612 billion journeys on the National Rail network, making the British network the fifth most used in the world (Great Britain ranks 23rd in world population). Unlike a number of other countries, rail travel in the United Kingdom has enjoyed a renaissance in recent years, with passenger numbers approaching their highest ever level (see usage figures below). This has coincided with the privatisation of British Rail, but the cause of this increase is unclear. The growth is partly attributed to a shift away from private motoring due to growing road congestion and increasing petrol prices, but also to the overall increase in travel due to affluence. Passenger journeys in Britain grew by 88% over the period 1997–98 to 2014 as compared to 62% in Germany, 41% in France and 16% in Spain.

Russell Square is a London Underground station. It is located opposite Russell Square on Bernard Street, Bloomsbury, in the London Borough of Camden. The station is on the Piccadilly line between Holborn and King's Cross St Pancras stations, and is in London fare zone 1.

Russell Square is not far from the British Museum, the University of London's main campus, Great Ormond Street Hospital, Russell Square Gardens and the Brunswick Centre.