If Everyone Returned ‘Home’, Who Would Be Left in England?
In Britain’s increasingly heated immigration debate, one provocative question is often repeated: if every immigrant returned to their “home”, who would actually be left in England? The question may sound simple, but history, demography and modern genetic research reveal a far more complicated reality: England itself was shaped by thousands of years of migration, settlement and intermarriage.
The question is often presented as though there were once a clearly defined, homogeneous English population that existed before successive waves of newcomers arrived.
But when examined against the historical and genetic record, that assumption quickly becomes difficult to sustain.
There has never been a single, scientifically identifiable group that can be described as the “original English”.
Instead, England’s population emerged through successive waves of movement, settlement, conquest and intermarriage stretching back thousands of years.
Who are the “original English”?
The first difficulty is that there is no fixed scientific definition of an “original English person”.
The British Isles were never home to one population that remained genetically and culturally unchanged. Different groups arrived, settled, interacted with existing communities and left their mark on the population.
Some of the earliest major human settlement dates back to prehistoric periods, with genetic traces of these ancient populations still detectable among people living in Britain today.
Roman rule subsequently brought soldiers, administrators and traders from across the Roman Empire.
From the fifth century onwards, groups identified as Angles and Saxons settled in parts of Britain. Their arrival had a profound influence on the development of the English language and the emergence of what became England.
Research conducted through the University of Oxford’s People of the British Isles project, one of the most extensive genetic studies of the British population, has found substantial Anglo-Saxon ancestry among populations in eastern, central and southern England.
But the genetic evidence does not suggest that the Anglo-Saxons simply replaced everyone who had lived there before them.
Instead, it points towards a complex process of interaction and intermarriage between incoming groups and existing populations.
Then came the Vikings.
Between the ninth and 11th centuries, Scandinavian raids and settlements added another layer to Britain’s demographic history. Their genetic influence remains particularly visible in places such as the Orkney Islands, where a significant proportion of the population has Norwegian ancestry linked to the Viking period.
Danish Viking settlement also left a lasting imprint on parts of eastern England, particularly in areas associated with the Danelaw.
The Norman Conquest of 1066 brought another dramatic political and cultural transformation.
Yet modern genetic research suggests that the demographic impact of the Norman conquest was much smaller than the political transformation it produced. Genetic evidence does not point to a wholesale replacement of England’s existing population.
The broader picture is therefore clear.
England did not emerge from a single ancestral population. It was built through layers of migration and intermarriage accumulated over thousands of years.
Migration did not end with the Normans
England’s history of migration continued long after 1066.
French Huguenots arrived in the 17th century after fleeing religious persecution. Jewish communities developed through successive periods of settlement, while the 19th century saw substantial Irish migration, particularly during and after the Great Famine.
The Second World War marked another major turning point.
In 1948, the arrival of the Windrush generation from the Caribbean became one of the defining moments of modern British migration history.
Caribbean migrants played an important role in rebuilding post-war Britain and contributing to public services, transport and the wider economy.
Further migration followed from South Asia and East Africa, including communities originating from India, Pakistan, Bangladesh, Kenya and Uganda.
Over subsequent decades, migration from the Middle East and the wider Arab and Muslim world added further diversity.
The expansion of the European Union also contributed to substantial migration from Poland and other Eastern European countries.
More recently, Britain has welcomed people arriving from Hong Kong, as well as refugees from Ukraine and Afghanistan.
Each wave added another layer to the country’s demographic story.
What do the official figures tell us?
The 2021 Census for England and Wales remains the latest comprehensive official source for detailed information on ethnicity.
According to the Office for National Statistics, 81.7% of the population — around 48.7 million people — identified within the broad “White” ethnic group, compared with 86% in 2011.
Within the overall population, 74.4% — around 44.4 million people — identified as “English, Welsh, Scottish, Northern Irish or British”, compared with 80.5% in 2011 and 87.5% in 2001.
The “Asian, Asian British or Asian Welsh” category accounted for 9.3% of the population, or around 5.5 million people, compared with 7.5% in 2011.
National identity provides a different picture.
Around 90.3% of people in England and Wales — approximately 53.8 million — identified with at least one British national identity, including English, Welsh, Scottish, Northern Irish, British or Cornish identities.
Meanwhile, 9.7% reported only a non-British national identity.
These figures highlight an important distinction: ethnicity, nationality and ancestry are not the same thing.
A person can identify as British while having migrant ancestry stretching back several generations. Likewise, someone belonging to an ethnic minority may have been born in Britain and have family roots in the country extending across generations.
Britain’s population is still changing
The census is conducted only once every 10 years, meaning the 2021 Census remains the latest comprehensive source for detailed ethnic data. The next census is scheduled for 2031.
The Office for National Statistics, however, publishes annual population estimates that provide a more up-to-date picture of demographic change.
Its latest estimates, released in July 2026 and covering the year to mid-2025, put the population of England and Wales at around 62 million.
Population growth slowed significantly compared with previous years.
Around 816,500 people moved to England and Wales from outside the UK during the year, compared with around 1.2 million in the previous year, while approximately 604,800 people left for overseas.
Births also declined for the second consecutive year.
At the same time, more than 40% of babies born in England and Wales in 2025 had at least one parent who was born outside the UK.
The figures illustrate how quickly the distinction between “migrant” and “native” can become blurred across generations.
Where does someone’s “home” begin?
This is where the hypothetical question — “What if everyone returned home?” — faces its biggest problem.
Where exactly would the line be drawn? Would descendants of Irish migrants who arrived in the 19th century be expected to leave?
What about families descended from French Huguenots who arrived hundreds of years ago? What about descendants of Anglo-Saxons, Vikings or Normans?
And what about families whose ancestors lived in Britain before those migrations but subsequently intermarried with newcomers?
There is no scientifically objective date at which someone becomes “native”.
Choosing the Roman period as the starting point would exclude later populations. Choosing the Anglo-Saxon period would ignore earlier inhabitants. Choosing the Norman Conquest would be equally arbitrary.
Every possible starting point would leave another group outside the definition.
Genetics tells a story of mixture, not purity
And modern genetic research makes the picture even more complicated. The evidence generally points towards mixture and continuity rather than complete population replacement.
The Anglo-Saxons, for example, did not simply arrive and erase the populations that preceded them. Their ancestry became mixed with that of communities already living in England.
The same broad pattern applies to later migration. Over generations, people from different backgrounds married, raised families and became part of the same communities. As a result, ancestry cannot easily be divided into neat categories of “English” and “foreign”.
Someone who identifies as English today may have ancestors from several different parts of Europe, while someone whose parents migrated to Britain may have children who identify entirely as British.
Perhaps the most important distinction in this debate is between identity and ancestry.
Being British is a question of national identity and belonging. Ancestry concerns family and genetic history.
The two can overlap, but they are not interchangeable. Millions of people who identify as British have ancestors who arrived from elsewhere, sometimes centuries ago.
At the same time, people born outside Britain may now consider Britain their home, while their children may have been born and raised entirely within British society. This makes the language of “returning home” increasingly difficult to apply across generations.
For many families, the country from which an ancestor migrated may remain part of their heritage, but it is not necessarily the country they consider home.
Why does the argument remain politically powerful?
The idea of a “native population” being displaced has become increasingly prominent in parts of Britain’s immigration debate.
Some nationalist and right-wing movements use demographic change to argue for tighter immigration controls, framing migration as a threat to an established national identity.
Others use the same hypothetical question to make the opposite argument: that the idea of a historically “pure” British population is difficult to sustain.
Historians and researchers have repeatedly pointed to Britain’s layered history as evidence that national identity has never been completely static.
Recognising this history, however, does not settle the contemporary political debate over immigration.
Questions about the scale and pace of migration, housing, pressure on public services, economic contribution, wages, integration and social cohesion are legitimate issues of public policy.
They should be examined using contemporary economic and demographic evidence rather than an imagined concept of “returning to one’s origins”.
So who would actually be left?
The answer depends entirely on where the starting point is drawn.
If “native” means people whose ancestors were present before Roman rule, a significant part of today’s population would be excluded.
If the benchmark is the pre-Anglo-Saxon population, the answer changes again.
If Anglo-Saxon ancestry becomes the benchmark, later populations — including Normans and generations of more recent migrants — would be excluded.
Push the starting point further back, and the definition becomes increasingly impossible to apply.
The fundamental problem is that England was never a demographic blank slate that was later populated by one single people.
Its population developed through successive movements of people and continuous interaction between communities.
From prehistoric settlers to Romans, Anglo-Saxons, Vikings and Normans, and from Irish, Caribbean and South Asian migrants to more recent arrivals from Europe, Asia, Africa and the Middle East, England’s population has been shaped by movement across borders.
So the more historically accurate question is not:
“Who would remain if everyone went home?”
It is:
“Which layer of England’s migration history should we choose as the starting point for deciding who belongs?”
History and genetics offer no scientifically definitive answer.
Perhaps that is the most revealing part of the debate: in a country shaped by thousands of years of movement and migration, the line between “native” and “newcomer” is far less clear than the political debate often suggests.
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