102-522: The Outer Ring Road is a 6-lane ring road that encircles the city of Delhi . It has three lanes in each direction, with a total length of 47 km. Although it used to have traffic lights and at-grade intersections , mushrooming interchanges have reduced the number of lights to just two, and traffic now flows much more smoothly. Several stretches of the Outer Ring Road have been notified as National Highways . Delhi features two ring roads,
204-468: A Bronze Age bridge were found on the south River Thames foreshore, upstream from Vauxhall Bridge . Two of the timbers were radiocarbon dated to 1750–1285 BC. In 2010, foundations of a large timber structure, dated to 4800–4500 BC, were found on the Thames' south foreshore downstream from Vauxhall Bridge. Both structures are on the south bank of the Thames, where the now-underground River Effra flows into
306-413: A city or town, with the standard of road being anything from an ordinary city street up to motorway level. An excellent example of this is London's North Circular/South Circular ring roads, which are largely made up of (mainly congested) ordinary city streets. In some cases, a circumferential route is formed by the combination of a major through highway and a similar-quality loop route that extends out from
408-662: A complete belt road around Hawaii Island . Other major U.S. cities with such a beltway superhighway: There are other U.S. superhighway beltway systems that consist of multiple routes that require multiple interchanges and thus do not provide true ring routes. Two designated examples are the Capital Beltway around Harrisburg, Pennsylvania using Interstate 81 , Interstate 83 , and Pennsylvania Route 581 and "The Bypass" around South Bend, Indiana using Interstate 80 , Interstate 90 , U.S. Route 31 , and Indiana State Road 331 . Edmonton , Alberta, has two ring roads. The first
510-529: A larger area, similar in size to Greater London, although some outer districts are excluded and some just outside included. The Greater London boundary has been aligned to the M25 motorway in places. Further urban expansion is now prevented by the Metropolitan Green Belt , although the built-up area extends beyond the boundary in places, producing a separately defined Greater London Urban Area . Beyond this
612-474: A main one and an outer one. The two ring roads have a combined length of 87 km. Outer Ring Road features 14 junctions. In no particular order, they are: Like the Ring Road, Delhi's Outer Ring Road features some semblance of grade separation between pedestrian and vehicular traffic. Pedestrian underpasses are present at the following points: Additional pedestrian underpasses are to be constructed at
714-403: A population density of 802 per acre (325 per hectare). In addition to the growing number of stores selling goods, such as Harding, Howell & Co. —one of the first department stores —located on Pall Mall , the streets had scores of street sellers . London's overcrowded conditions led to cholera epidemics, claiming 14,000 lives in 1848, and 6,000 in 1866. Rising traffic congestion led to
816-549: A population of 7,172,036 in 2001 and a population density of 11,760 inhabitants per square mile (4,542/km ). The extended area known as the London Metropolitan Region or the London Metropolitan Agglomeration, comprises a total area of 3,236 square miles (8,382 km ) has a population of 13,709,000 and a population density of 3,900 inhabitants per square mile (1,510/km ). Modern London stands on
918-564: A post- Brexit exodus of stock listings from the London Stock Exchange , London remains a European economic powerhouse, and one of the world's major financial centres . It hosts Europe's largest concentration of higher education institutions , some of which are the highest-ranked academic institutions in the world: Imperial College London in natural and applied sciences , the London School of Economics in social sciences , and
1020-403: A ring road or ring road system: In Iceland , there is a 1,332 km ring road, called the ring road (or Route 1), around most of the island (excluding only the remote Westfjords ). Most of the country's settlements are on or near this road. Major cities that are served by a ring road or ring road system: London London is the capital and largest city of both England and
1122-542: A temperate oceanic climate ( Köppen : Cfb ). Rainfall records have been kept in the city since at least 1697, when records began at Kew . At Kew, the most rainfall in one month is 7.4 inches (189 mm) in November 1755 and the least is 0 inches (0 mm) in both December 1788 and July 1800. Mile End also had 0 inches (0 mm) in April 1893. The wettest year on record is 1903, with a total fall of 38.1 inches (969 mm) and
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#17330860986201224-523: A through-the-city route there, with the Beltway encircling the city as I-495. The portion of I-95 entering the city from the south was soon completed (and so signed), primarily by adapting an existing major highway, but the planned extension of I-95 through residential areas northward to the Beltway was long delayed, and eventually abandoned, leaving the eastern portion of the Beltway as the best Interstate-quality route for through traffic. This eastern portion of
1326-609: A town or city, typically without either signals or road or railroad crossings. In the United States, beltways are commonly parts of the Interstate Highway System. Similar roads in the United Kingdom are often called "orbital motorways". Although the terms "ring road" and "orbital motorway" are sometimes used interchangeably, "ring road" often indicates a circumferential route formed from one or more existing roads within
1428-525: A true ring road around Detroit is effectively blocked by its location on the border with Canada and the Detroit River ; although constructing a route mostly or entirely outside city limits is technically feasible, a true ring around Detroit would necessarily pass through Canada, and so Interstate 275 and Interstate 696 together bypass but do not encircle the city. Sometimes, the presence of significant natural or historical areas limits route options, as for
1530-690: Is 1,049.8 millibars (31.00 inHg) on 20 January 2020. Summers are generally warm, sometimes hot. London's average July high is 23.5 °C (74.3 °F). On average each year, London experiences 31 days above 25 °C (77.0 °F) and 4.2 days above 30.0 °C (86.0 °F). During the 2003 European heat wave , prolonged heat led to hundreds of heat-related deaths. A previous spell of 15 consecutive days above 32.2 °C (90.0 °F) in England in 1976 also caused many heat related deaths. A previous temperature of 37.8 °C (100.0 °F) in August 1911 at
1632-405: Is a loose conglomeration of four major arterial roads with an average distance of 6 kilometres (3.7 mi) from the downtown core. Yellowhead Trail forms the northern section, Wayne Gretzky Drive /75 Street forms the eastern section, Whitemud Drive forms the southern and longest section, and 170 Street forms the western and shortest section. Whitemud Drive is the only section that
1734-413: Is a true controlled-access highway , while Yellowhead Trail and Wayne Gretzky Drive have interchanges and intersections and are therefore both limited-access roads . 170 Street and 75 Street are merely large arterial roads with intersections only. The second and more prominent ring road is named Anthony Henday Drive ; it circles the city at an average distance of 12 kilometres (7.5 mi) from
1836-554: Is agreed that the name came into these languages from Common Brythonic ; recent work tends to reconstruct the lost Celtic form of the name as * Londonjon or something similar. This was then adapted into Latin as Londinium and borrowed into Old English. Until 1889, the name "London" applied officially only to the City of London , but since then it has also referred to the County of London and to Greater London . In 1993, remains of
1938-417: Is challenging when a through highway and a loop bypass together form a circumferential ring road. Since neither of the highways involved is circumferential itself, either dual signage or two (or more) route numbers is needed. The history of signage on the Capital Beltway around Washington, D.C., is instructive here. Interstate 95 , a major through highway along the U.S. East Coast , was originally planned as
2040-528: Is formed of two tiers: a citywide, strategic tier and a local tier. Citywide administration is coordinated by the Greater London Authority (GLA), while local administration is carried out by 33 smaller authorities. The GLA consists of two elected components: the mayor of London , who has executive powers , and the London Assembly , which scrutinises the mayor's decisions and can accept or reject
2142-738: Is headquartered in Thames House on the north bank of the River Thames and the foreign intelligence service ( MI6 ) is headquartered in the SIS Building on the south bank. Crime rates vary widely across different areas of London. Crime figures are made available nationally at Local Authority and Ward level. In 2015, there were 118 homicides, a 25.5% increase over 2014. Recorded crime has been rising in London, notably violent crime and murder by stabbing and other means have risen. There were 50 murders from
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#17330860986202244-572: Is held by an independent . The ministerial post of minister for London was created in 1994, however as of 2024, the post has been vacant. Policing in Greater London, with the exception of the City of London , is provided by the Metropolitan Police ("The Met"), overseen by the mayor through the Mayor's Office for Policing and Crime (MOPAC). The Met is also referred to as Scotland Yard after
2346-496: Is known as London . It is the capital of the United Kingdom and of England by convention rather than statute. The capital of England was moved to London from Winchester as the Palace of Westminster developed in the 12th and 13th centuries to become the permanent location of the royal court , and thus the political capital of the nation. Greater London encompasses a total area of 611 square miles (1,583 km ) an area which had
2448-523: Is the vast London commuter belt . Greater London is split for some purposes into Inner London and Outer London , and by the River Thames into North and South , with an informal central London area. The coordinates of the nominal centre of London, traditionally the original Eleanor Cross at Charing Cross near the junction of Trafalgar Square and Whitehall , are about 51°30′26″N 00°07′39″W / 51.50722°N 0.12750°W / 51.50722; -0.12750 . Within London, both
2550-512: The 2012 Summer Olympics . London is an ancient name, attested in the first century AD, usually in the Latinised form Londinium . Modern scientific analyses of the name must account for the origins of the different forms found in early sources: Latin (usually Londinium ), Old English (usually Lunden ), and Welsh (usually Llundein ), with reference to the known developments over time of sounds in those different languages. It
2652-529: The Black Death in the mid-14th century, London lost nearly a third of its population. London was the focus of the Peasants' Revolt in 1381. London was a centre of England's Jewish population before their expulsion by Edward I in 1290. Violence against Jews occurred in 1190, when it was rumoured that the new king had ordered their massacre after they had presented themselves at his coronation. In 1264 during
2754-571: The Canary Wharf development. This was born out of London's increasing role as an international financial centre in the 1980s. Located about 2 miles (3 km) east of central London, the Thames Barrier was completed in the 1980s to protect London against tidal surges from the North Sea . The Greater London Council was abolished in 1986, leaving London with no central administration until 2000 and
2856-648: The Corn Laws in 1846 was specifically aimed at weakening Dutch economic power. London then overtook Amsterdam as the leading international financial centre. With the onset of the Industrial Revolution in Britain, an unprecedented growth in urbanisation took place, and the number of High Streets (the primary street for retail in Britain) rapidly grew. London was the world's largest city from about 1831 to 1925 , with
2958-469: The Frankfurt area, major national highways converge just outside city limits before forming one of several routes of an urban network of roads circling the city. Unlike in United States, route numbering is not a challenge on European ring roads as routes merge to form the single designated road. However, exit and road junction access can be challenging due to the complexity of other routes branching from or into
3060-553: The Georgian era , new districts such as Mayfair were formed in the west; new bridges over the Thames encouraged development in South London . In the east, the Port of London expanded downstream. London's development as an international financial centre matured for much of the 18th century. In 1762, George III acquired Buckingham House , which was enlarged over the next 75 years. During
3162-609: The King's Road , Chelsea and Carnaby Street . The role of trendsetter revived in the punk era. In 1965 London's political boundaries were expanded in response to the growth of the urban area and a new Greater London Council was created. During The Troubles in Northern Ireland, London was hit from 1973 by bomb attacks by the Provisional Irish Republican Army . These attacks lasted for two decades, starting with
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3264-654: The London Ambulance Service (LAS) NHS Trust , the largest free-at-the-point-of-use emergency ambulance service in the world. The London Air Ambulance charity operates in conjunction with the LAS where required. Her Majesty's Coastguard and the Royal National Lifeboat Institution operate on the River Thames , which is under the jurisdiction of the Port of London Authority from Teddington Lock to
3366-748: The Mediterranean was normally through Antwerp and over the Alps ; any ships passing through the Strait of Gibraltar to or from England were likely to be Italian or Ragusan . The reopening of the Netherlands to English shipping in January 1565 spurred a burst of commercial activity. The Royal Exchange was founded. Mercantilism grew and monopoly traders such as the East India Company were founded as trade expanded to
3468-594: The New Model Army entered London in 1647, and they were levelled by Parliament the same year. London was plagued by disease in the early 17th century, culminating in the Great Plague of 1665–1666, which killed up to 100,000 people, or a fifth of the population. The Great Fire of London broke out in 1666 in Pudding Lane in the city and quickly swept through the wooden buildings. Rebuilding took over ten years and
3570-554: The New World . London became the main North Sea port, with migrants arriving from England and abroad. The population rose from about 50,000 in 1530 to about 225,000 in 1605. In the 16th century, William Shakespeare and his contemporaries lived in London during English Renaissance theatre . Shakespeare's Globe Theatre was constructed in 1599 in Southwark . Stage performances came to a halt in London when Puritan authorities shut down
3672-843: The North and South Circular roads and the Inner Ring Road ). Birmingham also has three ring roads which consist of the Birmingham Box ; the A4540 , commonly known as the Middleway; and the A4040 , the Outer Ring Road. Birmingham once had a fourth ring road, the A4400 . This has been partially demolished and downgraded to improve traffic flow into the city. Other British cities have two: Leeds , Sheffield , Norwich and Glasgow . Cleveland, OH and San Antonio, TX , in
3774-590: The Old Bailey bombing . Racial inequality was highlighted by the 1981 Brixton riot . Greater London's population declined in the decades after the Second World War, from an estimated peak of 8.6 million in 1939 to around 6.8 million in the 1980s. The principal ports for London moved downstream to Felixstowe and Tilbury , with the London Docklands area becoming a focus for regeneration, including
3876-637: The Second Barons' War , Simon de Montfort 's rebels killed 500 Jews while attempting to seize records of debts. During the Tudor period , the Reformation produced a gradual shift to Protestantism . Much of London property passed from church to private ownership, which accelerated trade and business in the city. In 1475, the Hanseatic League set up a main trading base ( kontor ) of England in London, called
3978-568: The Stalhof or Steelyard . It remained until 1853, when the Hanseatic cities of Lübeck , Bremen and Hamburg sold the property to South Eastern Railway . Woollen cloth was shipped undyed and undressed from 14th/15th century London to the nearby shores of the Low Countries . Yet English maritime enterprise hardly reached beyond the seas of north-west Europe . The commercial route to Italy and
4080-543: The Thames , its primary geographical feature, a navigable river which crosses the city from the south-west to the east. The Thames Valley is a flood plain surrounded by gently rolling hills including Parliament Hill , Addington Hills , and Primrose Hill . Historically London grew up at the lowest bridging point on the Thames. The Thames was once a much broader, shallower river with extensive marshlands ; at high tide, its shores reached five times their present width. Since
4182-637: The Tower of London ; the site featuring the Palace of Westminster , Church of St. Margaret , and Westminster Abbey ; and the historic settlement in Greenwich where the Royal Observatory defines the prime meridian (0° longitude ) and Greenwich Mean Time . Other landmarks include Buckingham Palace , the London Eye , Piccadilly Circus , St Paul's Cathedral , Tower Bridge , and Trafalgar Square . The city has
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4284-527: The United Kingdom , with a population of 8,866,180 in 2022. The wider metropolitan area is the largest in Western Europe , with a population of 14.9 million. London stands on the River Thames in southeast England, at the head of a 50-mile (80 km) 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 ,
4386-488: The United States , also each have two, while Houston, Texas will have three official ring roads (not including the downtown freeway loop). Some cities have far more – Beijing , for example, has six ring roads , simply numbered in increasing order from the city center (though skipping #1), while Moscow has five, three innermost ( Central Squares of Moscow , Boulevard Ring and Garden Ring ) corresponding to
4488-521: The Victorian era the Thames has been extensively embanked , and many of its London tributaries now flow underground . The Thames is a tidal river, and London is vulnerable to flooding. The threat has increased over time because of a slow but continuous rise in high water level caused by climate change and by the slow 'tilting' of the British Isles as a result of post-glacial rebound . London has
4590-554: The 11th century, London was clearly the largest town in England. Westminster Abbey , rebuilt in Romanesque style by King Edward the Confessor , was one of the grandest churches in Europe. Winchester had been the capital of Anglo-Saxon England , but from this time London became the main forum for foreign traders and the base for defence in time of war. In the view of Frank Stenton : "It had
4692-494: The 18th century, London was said to be dogged by crime, and the Bow Street Runners were established in 1750 as a professional police force. Epidemics during the 1720s and 30s saw most children born in the city die before reaching their fifth birthday. Coffee-houses became a popular place to debate ideas, as growing literacy and development of the printing press made news widely available, with Fleet Street becoming
4794-651: The 1950s and not yet completed, called the Suburban Beltway. It consists of several roads— Lagimodière Boulevard , Abinojii Mikanah , the Fort Garry Bridge, the Moray Bridge, William R Clement Parkway , Chief Peguis Trail and the Kildonan Bridge . Saskatoon , Saskatchewan, has a ring road named Circle Drive. It is cosigned as Saskatchewan Highway 16 and Saskatchewan Highway 11 along the whole route since
4896-415: The 2013 opening of Circle Drive South. Regina , Saskatchewan has a partial ring road that is named Ring Road ; however, due to the city's urban growth since the road was originally constructed, it no longer functions as a true ring road and has instead come to be used partially for local arterial traffic. The Regina Bypass , a new partial ring road, has replaced it, although Ring Road must still be used in
4998-604: The Beltway ", derived metonymically from the Capital Beltway encircling Washington, D.C. Ring roads have been criticised for inducing demand , leading to more car journeys being taken and thus higher levels of pollution being created. By creating easy access by car to large areas of land, they can also act as a catalyst for development, leading to urban sprawl and car-centric planning. Ring roads have also been criticised for splitting communities and being difficult to navigate for pedestrians and cyclists. Most orbital motorways (or beltways) are purpose-built major highways around
5100-464: The Beltway was then redesignated from I-495 to I-95, leaving the I-495 designation only on the western portion, and the completed part of the planned Interstate inside the Beltway was redesignated as a spur, I-395 . A few years later, the resulting confusion from different route numbers on the circumferential Beltway was resolved by restoring I-495 signage for the entire Beltway, with dual signage for I-95 for
5202-467: The City of London and the City of Westminster have city status . The City of London and the remainder of Greater London are both counties for the purposes of lieutenancies . The area of Greater London includes areas that are part of the historic counties of Middlesex , Kent , Surrey , Essex and Hertfordshire . More recently, Greater London has been defined as a region of England and in this context
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#17330860986205304-538: 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. Despite
5406-435: The London area. This called for the Corporation of the city to extend its jurisdiction and administration over expanding areas around the city. Fearing an attempt by the Crown to diminish the Liberties of London , coupled with a lack of interest in administering these additional areas or concern by city guilds of having to share power, caused the Corporation's "The Great Refusal", a decision which largely continues to account for
5508-437: The M25; 188 km), Sydney Orbital Network (110 km) and Rome Orbital (68 km). In the United States many ring roads are called beltlines , beltways or loops , such as the Capital Beltway around Washington, D.C. Some ring roads, such as Washington's Capital Beltway, use "Inner Loop" and "Outer Loop" terminology for directions of travel, since cardinal (compass) directions cannot be signed uniformly around
5610-409: The Thames. Despite the evidence of scattered Brythonic settlements in the area, the first major settlement was founded by the Romans around 47 AD, about four years after their invasion of 43 AD. This only lasted until about 61 AD, when the Iceni tribe led by Queen Boudica stormed it and burnt it to the ground. The next planned incarnation of Londinium prospered, superseding Colchester as
5712-415: The United Kingdom's population and over 16% of England's population. The Greater London Built-up Area is the fourth-most populous in Europe, with about 9.8 million inhabitants as of 2011. The London metropolitan area is the third-most populous in Europe, with about 14 million inhabitants as of 2016, making London a megacity . Four World Heritage Sites are located in London: Kew Gardens ;
5814-407: The United States. In many cases, such as Interstate 285 in Atlanta, Georgia , circumferential highways serve as a bypass while other highways pass directly through the city center. In other cases, a primary Interstate highway passes around a city on one side, with a connecting loop Interstate bypassing the city on the other side, together forming a circumferential route, as with I-93 and I-495 in
5916-405: The Viking incursions formally agreed by the Danish warlord , Guthrum and the West Saxon king Alfred the Great in 886. The Anglo-Saxon Chronicle records that Alfred "refounded" London in 886. Archaeological research shows this involved abandonment of Lundenwic and a revival of life and trade within the old Roman walls . London then grew slowly until a dramatic increase in about 950. By
6018-479: The area of Lawrence, Massachusetts . However, if a primary Interstate passes through a city and a loop bypasses it on only one side (as in the Wilmington, Delaware , area), no fully circumferential route is provided. Within cities, ring roads sometimes have local nicknames; these include Washington DC's Interstate 495 (The "Capital Beltway"), Interstate 270 in Columbus, Ohio (The "Outerbelt"), and Interstate 285 in Atlanta (The "Perimeter"). Route numbering
6120-437: The centre of the British press. The invasion of Amsterdam by Napoleonic armies led many financiers to relocate to London and the first London international issue was arranged in 1817. Around the same time, the Royal Navy became the world's leading war fleet, acting as a major deterrent to potential economic adversaries. Following a fire in 1838, the Royal Exchange was redesigned by William Tite and rebuilt in 1844. The repeal of
6222-417: The city core. Ring roads can also serve to connect suburbs to each other, allowing efficient travel between them. The name "ring road" is used for the majority of metropolitan circumferential routes in Europe, such as the Berliner Ring , the Brussels Ring , the Amsterdam Ring , the Boulevard Périphérique around Paris and the Leeds Inner and Outer ring roads. Australia , Pakistan and India also use
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#17330860986206324-408: The city of Calgary , Alberta, for an entire length of 101-kilometre (63 mi). Winnipeg , Manitoba, has a ring road which is called the Perimeter Highway . It is designated as Manitoba Highway 101 on the north, northwest and east sides and as Manitoba Highway 100 on the south and southwest sides. The majority of it is a four-lane divided expressway . It has a second ring road, planned since
6426-425: The city's metropolis. The City of London at its core once comprised the whole settlement, but as its urban area grew, the Corporation of London resisted attempts to amalgamate the city with its suburbs , causing "London" to be defined several ways. Forty per cent of Greater London is covered by the London post town , in which 'London' forms part of postal addresses. The London telephone area code (020) covers
6528-412: The city, to intimidate the inhabitants. In 1097, William II began building Westminster Hall , near the abbey. It became the basis of a new Palace of Westminster . In the 12th century, the institutions of central government, which had hitherto followed the royal English court around the country, grew in size and sophistication and became increasingly fixed, for most purposes at Westminster , although
6630-443: The combined revenue expenditure by London councils and the GLA amounted to just over £22 billion (£14.7 billion for the boroughs and £7.4 billion for the GLA). The London Fire Brigade is the statutory fire and rescue service for Greater London, run by the London Fire and Emergency Planning Authority . It is the third largest fire service in the world. National Health Service ambulance services are provided by
6732-405: The comprehensive University College London . 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. London's diverse cultures encompass over 300 languages. The 2023 population of Greater London of just under 10 million made it Europe's third-most populous city , accounting for 13.4% of
6834-433: The concentric lines of fortifications around the ancient city, and the two outermost ( MKAD and Third Ring ) built in the twentieth century, though, confusingly, the Third Ring was built last. Geographical constraints can complicate the construction of a complete ring road. For example, the Baltimore Beltway in Maryland formerly crossed Baltimore Harbor on a high arch bridge prior to its collapse in 2024, and much of
6936-500: The creation of the Greater London Authority . To mark the 21st century, the Millennium Dome , London Eye and Millennium Bridge were constructed. On 6 July 2005 London was awarded the 2012 Summer Olympics , as the first city to stage the Olympic Games three times. On 7 July 2005, three London Underground trains and a double-decker bus were bombed in a series of terrorist attacks . In 2008, Time named London alongside New York City and Hong Kong as Nylonkong , hailing them as
7038-419: The creation of the London Underground , the world's first urban rail network . The Metropolitan Board of Works oversaw infrastructure expansion in the capital and some surrounding counties; it was abolished in 1889 when the London County Council was created out of county areas surrounding the capital. From the early years of the 20th century onwards, teashops were found on High Streets across London and
7140-401: The downtown core. It is a freeway for its entire 78-kilometre (48 mi) length, and was built to reduce inner-city traffic congestion, created a bypass of Yellowhead Trail, and has improved the movement of goods and services across Edmonton and the surrounding areas. It was completed in October 2016 as the first free-flowing orbital road in Canada. Stoney Trail is a ring road that circles
7242-713: The driest is 1921, with a total fall of 12.1 inches (308 mm). The average annual precipitation amounts to about 600mm, which is half the annual rainfall of New York City . Despite relatively low annual precipitation, London receives 109.6 rainy days on the 1.0mm threshold annually. London is vulnerable to climate change , and there is concern among hydrological experts that households may run out of water before 2050. Temperature extremes in London range from 40.2 °C (104.4 °F) at Heathrow on 19 July 2022 down to −17.4 °C (0.7 °F) at Northolt on 13 December 1981. Records for atmospheric pressure have been kept at London since 1692. The highest pressure ever reported
7344-480: The entire loop. The term 'ring road' is occasionally – and inaccurately – used interchangeably with the term ' bypass '. Bypasses around many large and small towns were built in many areas when many old roads were converted to four-lane status in the 1930s to 1950s, such as those along the Old National Road (now generally U.S. 40 or Interstate 70 ) in the United States, leaving the old road in place to serve
7446-603: The first Muslim mayor of a major Western capital. The mayor's statutory planning strategy is published as the London Plan , which was most recently revised in 2011. The local authorities are the councils of the 32 London boroughs and the City of London Corporation . They are responsible for most local services, such as local planning, schools, libraries, leisure and recreation, social services , local roads and refuse collection. Certain functions, such as waste management , are provided through joint arrangements. In 2009–2010
7548-441: The following points: Ring road A ring road (also known as circular road, beltline , beltway , circumferential ( high ) way , loop or orbital ) is a road or a series of connected roads encircling a town, city or country. The most common purpose of a ring road is to assist in reducing traffic volumes in the urban centre, such as by offering an alternate route around the city for drivers who do not need to stop in
7650-643: The highway's concurrent use as a through Interstate on its eastern portion. The longest complete beltway in the United States is the Charles W. Anderson Loop , a 94-mile (151 km) loop in Texas that forms a complete loop around the Greater San Antonio area. The longest complete belt road, or a beltway that is only two lanes, in the United States is Hawaii Belt Road , a 260-mile (420 km) belt in Hawaii that forms
7752-622: The location of its original headquarters in a road called Great Scotland Yard in Whitehall. The City of London has its own police force – the City of London Police . First worn by Met police officers in 1863, the custodian helmet has been called a "cultural icon" and a "symbol of British law enforcement". Introduced by the Met in 1929, the blue police telephone box (basis for the TARDIS in Doctor Who )
7854-528: The long-proposed Outer Beltway around Washington, D.C., where options for a new western Potomac River crossing are limited by a nearly continuous corridor of heavily visited scenic, natural, and historical landscapes in the Potomac River Gorge and adjacent areas. When referring to a road encircling a capital city, the term "beltway" can also have a political connotation, as in the American term " Inside
7956-455: The mayor's budget proposals each year. The GLA has responsibility for the majority of London's transport system through its functional arm Transport for London (TfL), it is responsible for overseeing the city's police and fire services, and also for setting a strategic vision for London on a range of issues. The headquarters of the GLA is City Hall , Newham. The mayor since 2016 has been Sadiq Khan ,
8058-718: The most museums , art galleries, libraries, and cultural venues in the UK, including the British Museum , National Gallery , Natural History Museum , Tate Modern , British Library , and numerous West End theatres. Important sporting events held in London include the FA Cup Final , the Wimbledon Tennis Championships , and the London Marathon . It became the first city to host three Summer Olympic Games upon hosting
8160-650: The most diverse cities in the world. In 1951, the Festival of Britain was held on the South Bank . The Great Smog of 1952 led to the Clean Air Act 1956 , which ended the " pea soup fogs " for which London had been notorious, and had earned it the nickname the "Big Smoke". Starting mainly in the mid-1960s, London became a centre for worldwide youth culture , exemplified by the Swinging London sub-culture associated with
8262-683: The northeast quadrant of the city. Hamilton , Ontario, has the Lincoln M. Alexander Parkway , Highway 403 and the Red Hill Valley Parkway which form a ring on three sides. Sudbury , Ontario, has a partial ring road consisting of the Southwest and Southeast Bypasses segment of Highway 17 , and the Northwest Bypass segment of Highway 144 . An unofficial northeast "bypass" route can also be completed on city arterial roads that largely bypass
8364-467: The old Roman city. By about 680 the city had become a major port again, but there is little evidence of large-scale production. From the 820s repeated Viking assaults brought decline. Three are recorded; those in 851 and 886 succeeded, while the last, in 994, was rebuffed. The Vikings applied Danelaw over much of eastern and northern England, its boundary running roughly from London to Chester as an area of political and geographical control imposed by
8466-522: The parent road, later reconnecting with the same highway. Such loops not only function as a bypass for through traffic, but also to serve outlying suburbs . In the United States, an Interstate highway loop is usually designated by a three-digit number beginning with an even digit before the two-digit number of its parent interstate. Interstate spurs, on the other hand, generally have three-digit numbers beginning with an odd digit. Circumferential highways are prominent features in or near many large cities in
8568-678: The partially completed Stockholm Ring Road in Sweden runs through tunnels or over long bridges. Some towns or cities on sea coasts or near rugged mountains cannot have a full ring road. Examples of such partial ring roads are Dublin's ring road ; and, in the USA, Interstate 287 , mostly in New Jersey (bypassing New York City), and Interstate 495 around Boston , none of which completely circles these seaport cities. In other cases, adjacent international boundaries may prevent ring road completion. Construction of
8670-486: The principal city of the Roman province of Britannia in 100. At its height in the 2nd century, Roman London had a population of about 60,000. With the early 5th-century collapse of Roman rule, the walled city of Londinium was effectively abandoned, although Roman civilisation continued around St Martin-in-the-Fields until about 450. From about 500, an Anglo-Saxon settlement known as Lundenwic developed slightly west of
8772-462: The resources, and it was rapidly developing the dignity and the political self-consciousness appropriate to a national capital ." After winning the Battle of Hastings , William, Duke of Normandy was crowned King of England in newly completed Westminster Abbey on Christmas Day 1066. William built the Tower of London , the first of many such in England rebuilt in stone in the south-eastern corner of
8874-624: The rest of Britain, with Lyons , who opened the first of their chain of teashops in Piccadilly in 1894, leading the way. The tearooms, such as the Criterion in Piccadilly, became a popular meeting place for women from the suffrage movement. The city was the target of many attacks during the suffragette bombing and arson campaign , between 1912 and 1914, which saw historic landmarks such as Westminster Abbey and St Paul's Cathedral bombed. London
8976-468: The ring road. One of the most renowned ring roads is the Vienna Ring Road ( Ringstraße ), a grand boulevard constructed in the mid-19th century and filled with representative buildings. Due to its unique architectural beauty and history, it has also been called the "Lord of the ring roads", and is declared by UNESCO as part of Vienna's World Heritage Site . Major European cities that are served by
9078-454: The royal treasury came to rest in the Tower . While the City of Westminster developed into a true governmental capital, its distinct neighbour, the City of London , remained England's largest city and principal commercial centre and flourished under its own unique administration, the Corporation of London . In 1100, its population was some 18,000; by 1300 it had grown to nearly 100,000. With
9180-534: The sea. London is the seat of the Government of the United Kingdom . Many government departments, as well as the prime minister's residence at 10 Downing Street , are based close to the Palace of Westminster , particularly along Whitehall . There are 75 members of Parliament (MPs) from London; As of June 2024 , 59 are from the Labour Party , 9 are Conservatives , 6 are Liberal Democrats and one constituency
9282-424: The start of 2018 to mid April 2018. Funding cuts to police in London are likely to have contributed to this, though other factors are involved. However, homicide figures fell in 2022 with 109 recorded for the year, and the murder rate in London is much lower than other major cities around the world. London, also known as Greater London , is one of nine regions of England and the top subdivision covering most of
9384-516: The term ring road, as in Melbourne 's Western Ring Road , Lahore 's Lahore Ring Road and Hyderabad 's Outer Ring Road . In Canada the term is the most commonly used, with "orbital" also used, but to a much lesser extent. In Europe and Australia, some ring roads, particularly longer ones of motorway standard, are known as "orbital motorways". Examples are the London Orbital (generally known as
9486-725: The theatres in the 1640s. The ban on theatre was lifted during the Restoration in 1660, and London's oldest operating theatre, Drury Lane , opened in 1663 in what is now the West End theatre district. By the end of the Tudor period in 1603, London was still compact. There was an assassination attempt on James I in Westminster, in the Gunpowder Plot of 5 November 1605. In 1637, the government of Charles I attempted to reform administration in
9588-626: The town or city, but allowing through travelers to continue on a wider, faster and safer route. Construction of fully circumferential ring roads has generally occurred more recently, beginning in the 1960s in many areas, when the U.S. Interstate Highway System and similar-quality roads elsewhere were designed. Ring roads have now been built around numerous cities and metropolitan areas, including cities with multiple ring roads, irregularly shaped ring roads and ring roads made up of various other long-distance roads. London has three ring roads (the M25 motorway ,
9690-691: The unique governmental status of the City . In the English Civil War , the majority of Londoners supported the Parliamentary cause. After an initial advance by the Royalists in 1642, culminating in the battles of Brentford and Turnham Green , London was surrounded by a defensive perimeter wall known as the Lines of Communication . The lines were built by up to 20,000 people, and were completed in under two months. The fortifications failed their only test when
9792-472: The urban core of the city, but are not fully controlled-access and must be shared with local traffic in the Nickel Centre and Rayside-Balfour districts of the city. Most major cities in Europe are served by a ring road that circles either the inner core of their metropolitan areas or the outer borders of the city proper or both. In major transit hubs, such as the Île-de-France region surrounding Paris and
9894-625: The world's three most influential global cities . In January 2015, Greater London's population was estimated to be 8.63 million, its highest since 1939. During the Brexit referendum in 2016, the UK as a whole decided to leave the European Union , but most London constituencies voted for remaining. However, Britain's exit from the EU in early 2020 only marginally weakened London's position as an international financial centre. The administration of London
9996-1014: Was bombed by the Germans in the First World War , and during the Second World War , the Blitz and other bombings by the German Luftwaffe killed over 30,000 Londoners, destroying large tracts of housing and other buildings across the city. The tomb of the Unknown Warrior , an unidentified member of the British armed forces killed during the First World War, was buried in Westminster Abbey on 11 November 1920. The Cenotaph , located in Whitehall ,
10098-452: 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
10200-437: Was once a common sight throughout London and regional cities in the UK. The British Transport Police are responsible for police services on National Rail , London Underground , Docklands Light Railway and Tramlink services. The Ministry of Defence Police is a special police force in London, which does not generally become involved with policing the general public. The UK's domestic counter-intelligence service ( MI5 )
10302-459: Was supervised by polymath Robert Hooke . In 1710, Christopher Wren 's masterpiece, St Paul's Cathedral , was completed, replacing its medieval predecessor that burned in the Great Fire of 1666. The dome of St Paul's dominated the London skyline for centuries, inspiring the artworks and writing of William Blake , with his 1789 poem " Holy Thursday " referring to 'the high dome of Pauls'. During
10404-516: Was unveiled on the same day, and is the focal point for the National Service of Remembrance held annually on Remembrance Sunday , the closest Sunday to 11 November. The 1948 Summer Olympics were held at the original Wembley Stadium , while London was still recovering from the war. From the 1940s, London became home to many immigrants, primarily from Commonwealth countries such as Jamaica, India, Bangladesh and Pakistan, making London one of
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