The population of the United Kingdom was estimated at 67,596,281 in 2022. It is the 21st most populated country in the world and has a population density of 279 people per square kilometre, with England having significantly greater density than Wales, Scotland, and Northern Ireland. Almost a third of the population lives in south east England, which is predominantly urban and suburban, with 8,866,180 people in the capital city, London, whose population density was 5,640 inhabitants per square kilometre (14,600/sq mi) in 2022.
White British is an ethnicity classification used for the native White population identifying as English, Scottish, Welsh, Cornish, Northern Irish, or British in the United Kingdom Census. In the 2011 census, the White British population was 49,997,686, 81.5% of Great Britain's total population. For the United Kingdom entirely, due to different reporting measures within Northern Ireland which includes all those who identified as British with those who identified as Irish, an amalgamated total of 52,320,080 including those who identified as White Irish in Great Britain is given making up 82.8% of the population.
Australians in the United Kingdom, or Australian Britons, include Australians who have become residents or citizens of the United Kingdom. The largest segment of Australia's diaspora of 1 million resides in the United Kingdom.
French migration to the United Kingdom is a phenomenon that has occurred at various points in history. The Norman Conquest of England by William the Conqueror in 1066 resulted in the arrival of Normans, while in the 16th and 17th centuries Protestant Huguenots fled religious persecution to East London. Other waves are associated with monasticism, particularly post-conquest Benedictines and Cistercians, aristocracy fleeing the French Revolution, expulsion of religious orders by Third Republic France, and current expats.
Mixed is an ethnic group category that was first introduced by the United Kingdom's Office for National Statistics for the 2001 Census. Colloquially, it refers to British citizens or residents whose parents are of two or more races or ethnic backgrounds. The Mixed or Multiple ethnic group numbered just under 1.8 million in the 2021 United Kingdom census or 2.7% of the total UK population.
Spaniards in the United Kingdom are people of Spanish descent resident in Britain. They may be British citizens or non-citizen immigrants. In the 2021 census for England and Wales, 81,150 people self-identified as ethnic Spanish.
East Asians in the United Kingdom are East Asians living in the United Kingdom. They have been present in the country since the 17th century and primarily originate from countries such as China, Hong Kong, Japan, South Korea and Taiwan. They are called "East Asian" or "Oriental", although – dependent upon the context – the use of the term "Oriental" might be considered by some to be derogatory or offensive. In the 2001 British census, the term Chinese or Other is used.
The term Other White, or White Other, is a classification of ethnicity in the United Kingdom, used in documents such as the 2021 United Kingdom Census, to describe people who identify as white persons who are not of the English, Welsh, Scottish, Roma, Irish or Irish Traveller ethnic groupings. In Scotland, the term Other White is also used to refer collectively to those not of Scottish or Other British ethnicity, in which case it also includes those of a Gypsy, Roma, Irish or Irish Traveller background.
Kenyan migration to the United Kingdom has been occurring for many decades. As a result, many people in the UK were born in Kenya, or have Kenyan ancestry. The majority of Kenya-born people who migrated to the UK are of South Asian extraction.
Malaysians in the United Kingdom are British citizens who have full or partial Malaysian origin or descent and Malaysian citizens residing in the United Kingdom. The 2001 UK Census recorded 49,886 Malaysian-born people. The 2011 census recorded 62,396 people born in Malaysia living in England, 2,117 in Wales, 4,721 in Scotland and 705 in Northern Ireland. The largest concentrations of Malaysian-born residents were recorded in Greater London and South East England (11,331). The Office for National Statistics estimates that 75,000 Malaysian-born expatriates were residents in the UK in 2017.
Czechs in the United Kingdom refers to the phenomenon of Czech people migrating to the United Kingdom from the Czech Republic or from the political entities that preceded it, such as Czechoslovakia. There are some people in the UK who were either born in the Czech lands or have Czech ancestry, some of whom descended from Jewish refugees who arrived during World War II.
Trinidadian and Tobagonian British people are citizens or residents of the United Kingdom whose ethnic origins lie fully or partially in Trinidad and Tobago.
New Zealanders in the United Kingdom are citizens or residents of the United Kingdom who originate from New Zealand.
Since 1922, the United Kingdom has been made up of four countries: England, Scotland, Wales and Northern Ireland. The UK Prime Minister's website has used the phrase "countries within a country" to describe the United Kingdom.
According to ONS estimates in 2019 there were 76,000 Nepalese citizens and Nepalese British citizens in the United Kingdom.
A census of the population of the United Kingdom is taken every ten years. The 2011 census was held in all counties of the UK on 27 March 2011. It was the first UK census which could be completed online via the Internet. The Office for National Statistics (ONS) is responsible for the census in England and Wales, the General Register Office for Scotland (GROS) is responsible for the census in Scotland, and the Northern Ireland Statistics and Research Agency (NISRA) is responsible for the census in Northern Ireland.
Lithuanians in the United Kingdom include individuals born in Lithuania who have migrated to the UK, among them Lithuanian citizens of Russian descent and Polish Lithuanian citizens, as well as their British-born descendants. The 2011 UK Census recorded 95,730 Lithuanian-born residents in England, 1,353 in Wales, 4,287 in Scotland, and 7,341 in Northern Ireland. The previous, 2001 UK Census, had recorded 4,363 Lithuanian-born residents. The Office for National Statistics estimates that 144,000 Lithuanian-born immigrants were resident in the UK in 2013.
Southeast Asians have lived in the United Kingdom for several centuries, arriving from Southeast Asia and primarily originating from countries and territories such as the Philippines, Malaysia, Indonesia, Burma, Singapore, Thailand and Vietnam.
Indonesian people in the United Kingdom include British citizens and non-citizen immigrants and expatriates of Indonesian descent in the United Kingdom.
White: Gypsy or Irish Traveller is an ethnicity classification used in the 2011 United Kingdom Census. In the 2011 census, the White: Gypsy or Irish Traveller population was 63,193 or about 0.1 percent of the total population of the country. The ethnicity category may encompass populace from the distinct ethnic groups of Romanichal Travellers or Irish Travellers, and their respective related subgroupings, who identify as, or are perceived to be, white people in the United Kingdom.
South Africa-born residents in the United Kingdom: 235,060 – 0.4% 
England: 211,447– 0.4% (2021) [1] 
Scotland: 15,253 – 0.3% (2022) [2] 
Wales: 5,733 – 0.2% (2021) [1] 
