United Kingdom

The United Kingdom of Great Britain and Northern Ireland was created when the Kingdoms of England and Scotland -- which previously had been distinct states under a single monarchy -- were joined under the 1707 Acts of Union. The island of Ireland was incorporated under the 1800 Acts of Union, while Wales had been part of the Kingdom of England since the 16th century. The United Kingdom has historically played a leading role in developing parliamentary democracy and in advancing literature and science. The 18th and 19th centuries saw the rapid expansion of the British Empire despite the loss of the Thirteen Colonies, and at its zenith in the early 20th century, the British Empire stretched over one fourth of the earth's surface. The first half of the 20th century saw two World Wars seriously deplete the UK's strength and the Irish Republic withdraw from the union. The second half witnessed the dismantling of the Empire and the UK rebuilding itself into a modern and prosperous European nation. As one of five permanent members of the UN Security Council and a founding member of NATO and the Commonwealth of Nations, the UK pursues a global approach to foreign policy. The devolved Scottish Parliament, the National Assembly for Wales, and the Northern Ireland Assembly were established in 1998.
The UK was an active member of the EU after its accession in 1973, although it chose to remain outside the Economic and Monetary Union. However, motivated in part by frustration at a remote bureaucracy in Brussels and massive migration into the country, UK citizens in 2016 voted by 52 to 48 percent to leave the EU. On 31 January 2020, the UK became the only country to depart the EU -- a move known as "Brexit" -- after prolonged negotiations on EU-UK economic and security relationships.

the core of the population lies in and around London, with significant clusters found in central Britain around Manchester and Liverpool, in the Scottish lowlands between Edinburgh and Glasgow, in southern Wales in and around Cardiff, and in far-eastern Northern Ireland, centered on Belfast

lies near vital North Atlantic sea lanes; only 35 km (22 mi) from France and linked by tunnel under the English Channel (the Channel Tunnel or Chunnel); because of heavily indented coastline, no location is more than 125 km (78 mi) from tidal waters

the core of the population lies in and around London, with significant clusters found in central Britain around Manchester and Liverpool, in the Scottish lowlands between Edinburgh and Glasgow, in southern Wales in and around Cardiff, and in far-eastern Northern Ireland, centered on Belfast

conventional long form: United Kingdom of Great Britain and Northern Ireland; note - the island of Great Britain includes England, Scotland, and Wales
conventional short form: United Kingdom
abbreviation: UK
etymology: the name United Kingdom is self-descriptive; the name Britain probably derives from the Celtic word pretani, meaning "painted people;" the designation of Great Britain for England, Scotland, and Wales dates back to medieval times and was used to distinguish the island from Little Britain, or Brittany, in modern France; the name Ireland evolved from the Gaelic name Eriu, which is possibly derived from the Old Celtic iveriu, meaning "good land"

name: London
geographic coordinates: 51 30 N, 0 05 W
time difference: UTC 0 (5 hours ahead of Washington, DC, during Standard Time)
daylight saving time: +1hr, begins last Sunday in March; ends last Sunday in October
time zone note: the time statements apply to the United Kingdom proper, not to its crown dependencies or overseas territories
etymology: the name derives from the Roman settlement of Londinium, established on the current site of London around A.D. 43; the original meaning of the name is uncertain

England: 24 two-tier counties, 32 London boroughs and 1 City of London or Greater London, 36 metropolitan districts, 59 unitary authorities (including 4 single-tier counties*)
two-tier counties: Cambridgeshire, Cumbria, Derbyshire, Devon, East Sussex, Essex, Gloucestershire, Hampshire, Hertfordshire, Kent, Lancashire, Leicestershire, Lincolnshire, Norfolk, North Yorkshire, Nottinghamshire, Oxfordshire, Somerset, Staffordshire, Suffolk, Surrey, Warwickshire, West Sussex, Worcestershire
London boroughs and City of London or Greater London: Barking and Dagenham, Barnet, Bexley, Brent, Bromley, Camden, Croydon, Ealing, Enfield, Greenwich, Hackney, Hammersmith and Fulham, Haringey, Harrow, Havering, Hillingdon, Hounslow, Islington, Kensington and Chelsea, Kingston upon Thames, Lambeth, Lewisham, City of London, Merton, Newham, Redbridge, Richmond upon Thames, Southwark, Sutton, Tower Hamlets, Waltham Forest, Wandsworth, Westminster
metropolitan districts: Barnsley, Birmingham, Bolton, Bradford, Bury, Calderdale, Coventry, Doncaster, Dudley, Gateshead, Kirklees, Knowlsey, Leeds, Liverpool, Manchester, Newcastle upon Tyne, North Tyneside, Oldham, Rochdale, Rotherham, Salford, Sandwell, Sefton, Sheffield, Solihull, South Tyneside, St. Helens, Stockport, Sunderland, Tameside, Trafford, Wakefield, Walsall, Wigan, Wirral, Wolverhampton
unitary authorities: Bath and North East Somerset; Bedford; Blackburn with Darwen; Blackpool; Bournemouth, Christchurch and Poole; Bracknell Forest; Brighton and Hove; City of Bristol; Buckinghamshire; Central Bedfordshire; Cheshire East; Cheshire West and Chester; Cornwall; Darlington; Derby; Dorset; Durham County*; East Riding of Yorkshire; Halton; Hartlepool; Herefordshire*; Isle of Wight*; Isles of Scilly; City of Kingston upon Hull; Leicester; Luton; Medway; Middlesbrough; Milton Keynes; North East Lincolnshire; North Lincolnshire; North Northamptonshire; North Somerset; Northumberland*; Nottingham; Peterborough; Plymouth; Portsmouth; Reading; Redcar and Cleveland; Rutland; Shropshire; Slough; South Gloucestershire; Southampton; Southend-on-Sea; Stockton-on-Tees; Stoke-on-Trent; Swindon; Telford and Wrekin; Thurrock; Torbay; Warrington; West Berkshire; West Northamptonshire; Wiltshire; Windsor and Maidenhead; Wokingham; York
Northern Ireland: 5 borough councils, 4 district councils, 2 city councils
borough councils: Antrim and Newtownabbey; Ards and North Down; Armagh City, Banbridge, and Craigavon; Causeway Coast and Glens; Mid and East Antrim
district councils: Derry City and Strabane; Fermanagh and Omagh; Mid Ulster; Newry, Murne, and Down city councils: Belfast; Lisburn and Castlereagh
Scotland: 32 council areas
council areas: Aberdeen City, Aberdeenshire, Angus, Argyll and Bute, Clackmannanshire, Dumfries and Galloway, Dundee City, East Ayrshire, East Dunbartonshire, East Lothian, East Renfrewshire, City of Edinburgh, Eilean Siar (Western Isles), Falkirk, Fife, Glasgow City, Highland, Inverclyde, Midlothian, Moray, North Ayrshire, North Lanarkshire, Orkney Islands, Perth and Kinross, Renfrewshire, Shetland Islands, South Ayrshire, South Lanarkshire, Stirling, The Scottish Borders, West Dunbartonshire, West Lothian
Wales: 22 unitary authorities
unitary authorities: Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Carmarthenshire, Ceredigion, Conwy, Denbighshire, Flintshire, Gwynedd, Isle of Anglesey, Merthyr Tydfil, Monmouthshire, Neath Port Talbot, Newport, Pembrokeshire, Powys, Rhondda Cynon Taff, Swansea, The Vale of Glamorgan, Torfaen, Wrexham

history: uncoded; partly statutes, partly common law and practice
amendment process: proposed as a bill for an Act of Parliament by the government, by the House of Commons, or by the House of Lords; passage requires agreement by both houses and by the monarch (Royal Assent)

chief of state: King CHARLES III (since 8 September 2022)
head of government: Prime Minister Keir STARMER (since 5 July 2024)
cabinet: Cabinet appointed by the prime minister
election/appointment process: the monarchy is hereditary; following legislative elections, the leader of the majority party or majority coalition usually becomes the prime minister
note: note 1: in addition to serving as the UK head of state, the British sovereign is the constitutional monarch for 14 additional Commonwealth countries (each referred to as a "Commonwealth realm")
note 2: King CHARLES III succeeded his mother, Queen ELIZABETH II, after serving as Prince of Wales (heir apparent) for over 64 years -- the longest such tenure in British history

legislature name: UK Parliament
legislative structure: bicameral

highest court(s): Supreme Court (consists of 12 justices, including the court president and deputy president)
judge selection and term of office: judge candidates selected by an independent committee of several judicial commissions, then recommended to the prime minister, and appointed by the monarch; justices serve for life
subordinate courts: England and Wales: Court of Appeal (civil and criminal divisions); High Court; Crown Court; County Courts; Magistrates' Courts; Scotland: Court of Sessions; Sheriff Courts; High Court of Justiciary; tribunals; Northern Ireland: Court of Appeal in Northern Ireland; High Court; county courts; magistrates' courts; specialized tribunals

Alliance Party or APNI (Northern Ireland) 
Conservative and Unionist Party 
Democratic Unionist Party or DUP (Northern Ireland) 
Green Party of England and Wales or Greens 
Labor (Labour) Party 
Liberal Democrats (Lib Dems)
Party of Wales (Plaid Cymru) 
Reform UK 
Scottish National Party or SNP 
Sinn Fein (Northern Ireland) 
Social Democratic and Labor Party or SDLP (Northern Ireland) 
Traditional Unionist Voice or TUV 
UK Independence Party or UKIP 
Ulster Unionist Party or UUP (Northern Ireland) 
Workers Party of Great Britian

chief of mission: Ambassador (vacant); Chargé d'Affaires James ROSCOE (since 11 September 2025)
chancery: 3100 Massachusetts Avenue NW, Washington, DC 20008
telephone: [1] (202) 588-6500
FAX: [1] (202) 588-7870
email address and website: ukin.washington@fcdo.gov.uk
https://www.gov.uk/world/organisations/british-embassy-washington
consulate(s) general: Atlanta, Boston, Chicago, Houston, Los Angeles, Miami, New York, San Francisco

ADB (nonregional member), AfDB (nonregional member), Arctic Council (observer), Australia Group, BIS, C, CBSS (observer), CD, CDB, CE, CERN, EAPC, EBRD, ECB, EIB, EITI (implementing country), ESA, EU, FAO, FATF, G-5, G-7, G-8, G-10, G-20, IADB, IAEA, IBRD, ICAO, ICC (national committees), ICCt, ICRM, IDA, IEA, IFAD, IFC, IFRCS, IGAD (partners), IHO, ILO, IMF, IMO, IMSO, Interpol, IOC, IOM, IPU, ISO, ITSO, ITU, ITUC (NGOs), MIGA, MONUSCO, NATO, NEA, NSG, OAS (observer), OECD, OPCW, OSCE, Pacific Alliance (observer), Paris Club, PCA, PIF (partner), SELEC (observer), SICA (observer), UN, UNCTAD, UNESCO, UNFICYP, UNHCR, UNMISS, UNOOSA, UNRWA, UN Security Council (permanent), UNSOM, UPU, Wassenaar Arrangement, WCO, WHO, WIPO, WMO, WTO, ZC

no official date of independence: 927 (minor English kingdoms unite); 3 March 1284 (enactment of the Statute of Rhuddlan uniting England and Wales); 1536 (Act of Union incorporates England and Wales); 1 May 1707 (Acts of Union unite England, Scotland, and Wales as Great Britain); 1 January 1801 (Acts of Union unite Great Britain and Ireland as the United Kingdom of Great Britain and Ireland); 6 December 1921 (Anglo-Irish Treaty formalizes partition of Ireland; six counties become Northern Ireland and remain part of the UK); 12 April 1927 (Royal and Parliamentary Titles Act establishes current name of the United Kingdom of Great Britain and Northern Ireland)

total World Heritage Sites: 33 (28 cultural, 4 natural, 1 mixed); note - includes one site in Bermuda
selected World Heritage Site locales: Giant's Causeway and Causeway Coast (n); Ironbridge Gorge (c); Stonehenge, Avebury, and Associated Sites (c); Castles and Town Walls of King Edward in Gwynedd (c); Blenheim Palace (c); City of Bath (c); Tower of London (c); St Kilda (m); Maritime Greenwich (c); Old and New Towns of Edinburgh (c); Royal Botanic Gardens, Kew (c); The English Lake District (c)

high-income, non-EU European economy; global financial center and dominant service sector; sluggish growth from stringent monetary policy, reduced business investment, low productivity and participation rates; fiscal austerity in face of high public debt 

highest court(s): Supreme Court (consists of 12 justices, including the court president and deputy president)
judge selection and term of office: judge candidates selected by an independent committee of several judicial commissions, then recommended to the prime minister, and appointed by the monarch; justices serve for life
subordinate courts: England and Wales: Court of Appeal (civil and criminal divisions); High Court; Crown Court; County Courts; Magistrates' Courts; Scotland: Court of Sessions; Sheriff Courts; High Court of Justiciary; tribunals; Northern Ireland: Court of Appeal in Northern Ireland; High Court; county courts; magistrates' courts; specialized tribunals

the inventory of the British military is comprised mostly of domestically produced weapons and equipment, with a smaller mix of some imported Western weapons systems, particularly from the US; the UK defense industry is capable of producing a wide variety of air, land, and sea weapons systems and is one of the world's top weapons suppliers; it also cooperates with other European countries and the US in the research and development of weapons systems (2025)

some variations by service, but generally 16-36 years of age for enlisted (with parental consent under 18) and 18-29 for officers; minimum length of service 4 years; women serve in all military services including combat roles; conscription abolished in 1963 (2024)
note: note 1: women made up 11.7% of the military's full-time personnel in 2024
note 2: the British military allows Commonwealth nationals who are current UK residents and have been in the country for at least 5 years to apply; it also accepts Irish citizens
note 3: the British Army has continued the historic practice of recruiting Gurkhas from Nepal to serve in the Brigade of Gurkhas; the British began to recruit Nepalese citizens (Gurkhas) into the East India Company Army during the Anglo-Nepalese War (1814-1816); the Gurkhas subsequently were brought into the British Indian Army and by 1914, there were 10 Gurkha regiments, collectively known as the Gurkha Brigade; following the partition of India in 1947, an agreement between Nepal, India, and Great Britain allowed for the transfer of the 10 regiments from the British Indian Army to the separate British and Indian armies; four of the regiments were transferred to the British Army, where they have since served continuously as the Brigade of Gurkhas

the British military has more than 8,000 personnel on permanent or long-term rotational deployments around the globe in support of NATO, UN, or other commitments and agreements; key deployments include approximately 1,000 in Brunei, approximately 2,500 in Cyprus (includes 250 for UNFICYP), approximately 900-1,000 in Estonia (NATO), over 1,000 in the Falkland Islands, 500-600 in Gibraltar, and more than 1,000 in the Middle East; its air and naval forces conduct missions on a global basis; the British military also participates in large scale NATO exercises, including providing some 16,000 personnel for the 6-month 2024 Steadfast Defender exercise (2024)

the British military has a long history, a global presence, and a wide range of missions and responsibilities, including protecting the UK, its dependencies and territories, national interests, and values, preventing conflict, providing humanitarian assistance, participating in international peacekeeping, building relationships, and fulfilling the UK’s alliance and treaty commitments; in addition to its role in the UN, the UK is a leading member of NATO
the UK is a member of the Five Power Defense Arrangements (FPDA), a series of mutual assistance agreements reached in 1971 embracing Australia, Malaysia, New Zealand, Singapore, and the UK; in 2014, the UK led the formation of the Joint Expeditionary Force (JEF), a pool of high-readiness military forces from the Baltic and Scandinavian countries intended to respond to a wide range of contingencies both in peacetime and in times of crisis or conflict; the UK military also has strong bilateral ties with a variety of foreign militaries, particularly the US, with which it has a mutual defense treaty; British and US military forces have routinely operated side-by-side across a wide range of operations; other close military relationships include Australia, France, Germany, and the Netherlands; in 2010, for example, France and the UK signed a declaration on defense and security cooperation that included greater military interoperability and a Combined Joint Expeditionary Force (CJEF), a deployable, combined Anglo-French military force for use in a range of crisis scenarios (2025)

chief of mission: Ambassador (vacant); Chargé d'Affaires James ROSCOE (since 11 September 2025)
chancery: 3100 Massachusetts Avenue NW, Washington, DC 20008
telephone: [1] (202) 588-6500
FAX: [1] (202) 588-7870
email address and website: ukin.washington@fcdo.gov.uk
https://www.gov.uk/world/organisations/british-embassy-washington
consulate(s) general: Atlanta, Boston, Chicago, Houston, Los Angeles, Miami, New York, San Francisco

ADB (nonregional member), AfDB (nonregional member), Arctic Council (observer), Australia Group, BIS, C, CBSS (observer), CD, CDB, CE, CERN, EAPC, EBRD, ECB, EIB, EITI (implementing country), ESA, EU, FAO, FATF, G-5, G-7, G-8, G-10, G-20, IADB, IAEA, IBRD, ICAO, ICC (national committees), ICCt, ICRM, IDA, IEA, IFAD, IFC, IFRCS, IGAD (partners), IHO, ILO, IMF, IMO, IMSO, Interpol, IOC, IOM, IPU, ISO, ITSO, ITU, ITUC (NGOs), MIGA, MONUSCO, NATO, NEA, NSG, OAS (observer), OECD, OPCW, OSCE, Pacific Alliance (observer), Paris Club, PCA, PIF (partner), SELEC (observer), SICA (observer), UN, UNCTAD, UNESCO, UNFICYP, UNHCR, UNMISS, UNOOSA, UNRWA, UN Security Council (permanent), UNSOM, UPU, Wassenaar Arrangement, WCO, WHO, WIPO, WMO, WTO, ZC

ADB (nonregional member), AfDB (nonregional member), Arctic Council (observer), Australia Group, BIS, C, CBSS (observer), CD, CDB, CE, CERN, EAPC, EBRD, ECB, EIB, EITI (implementing country), ESA, EU, FAO, FATF, G-5, G-7, G-8, G-10, G-20, IADB, IAEA, IBRD, ICAO, ICC (national committees), ICCt, ICRM, IDA, IEA, IFAD, IFC, IFRCS, IGAD (partners), IHO, ILO, IMF, IMO, IMSO, Interpol, IOC, IOM, IPU, ISO, ITSO, ITU, ITUC (NGOs), MIGA, MONUSCO, NATO, NEA, NSG, OAS (observer), OECD, OPCW, OSCE, Pacific Alliance (observer), Paris Club, PCA, PIF (partner), SELEC (observer), SICA (observer), UN, UNCTAD, UNESCO, UNFICYP, UNHCR, UNMISS, UNOOSA, UNRWA, UN Security Council (permanent), UNSOM, UPU, Wassenaar Arrangement, WCO, WHO, WIPO, WMO, WTO, ZC

refugees: 640,460 (2024 est.)
stateless persons: 4,672 (2024 est.)

total ports: 185 (2024)
large: 7
medium: 24
small: 67
very small: 86
size unknown: 1
ports with oil terminals: 67
key ports: Aberdeen, Barrow-in-Furness, Barry, Belfast, Blyth, Bristol, Cardiff, Dundee, Falmouth Harbour, Glasgow, Greenock, Grimsby, Immingham, Kingston-upon-Hull, Leith, Lerwick, Liverpool, London, Londonderry, Lyness, Manchester, Milford Haven, Newport, Peterhead, Plymouth, Portland Harbour, Portsmouth Harbour, Southampton, Sunderland, Teesport, Tynemouth

air pollution in the London region; soil pollution from pesticides and heavy metals; decline in marine and coastal habitats from housing, tourism, and industry

party to: Air Pollution, Air Pollution-Heavy Metals, Air Pollution-Multi-effect Protocol, Air Pollution-Nitrogen Oxides, Air Pollution-Persistent Organic Pollutants, Air Pollution-Sulphur 94, Air Pollution-Volatile Organic Compounds, Antarctic-Environmental Protection, Antarctic-Marine Living Resources, Antarctic Seals, Antarctic Treaty, Biodiversity, Climate Change, Climate Change-Kyoto Protocol, Climate Change-Paris Agreement, Comprehensive Nuclear Test Ban, Desertification, Endangered Species, Environmental Modification, Hazardous Wastes, Law of the Sea, Marine Dumping-London Convention, Marine Dumping-London Protocol, Marine Life Conservation, Nuclear Test Ban, Ozone Layer Protection, Ship Pollution, Tropical Timber 2006, Wetlands, Whaling
signed, but not ratified: none of the selected agreements

public-service British Broadcasting Corporation (BBC) is the largest broadcasting company in the world; BBC operates multiple TV networks with regional and local TV; mixed system of public and commercial TV broadcasters along with satellite and cable systems provide access to hundreds of international TV stations; BBC operates multiple national, regional, and local radio networks with multiple transmission sites; large number of commercial and satellite radio stations available (2018)