A data essay
In September 2025, more Britons named immigration the country's biggest issue than at any point in a decade. At that exact moment, net migration was collapsing. This page is about that gap, between what we believe and what is measured, in the UK and across Europe.
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The gap
This vermilion line is concern: the share of Britons telling YouGov that immigration is one of the country's most important issues.
This teal line is reality: net migration to the UK, as measured by the ONS. It peaked at 944,000 in the year to March 2023…
…then fell to 171,000 by December 2025, a fall of 82 per cent. Concern kept climbing. In September 2025 it reached its highest level since 2015.
Lines moving in opposite directions. The rest of this page is about why, myth by myth.
Before any chart: what's your own guess? Out of every 100 people living in the UK, how many were born abroad? Drag the slider, then lock in your answer.
Everywhere this question is asked, the public guesses high. Britons have typically guessed around 24%. The measured figure is about 14%.
It is not a British quirk. Across 14 countries Ipsos surveyed in 2024, the average guess was 24% against an actual 11%. Americans guessed 33% (actual: 15%). A 2022 Eurobarometer found 68% of Europeans overestimate the migrant share.
Ipsos, after a decade of running the survey, calls the immigrant share one of the most persistently misperceived numbers in public life.
Ask Britons what drives immigration and 44% point to asylum seekers; a quarter say small boats specifically. Here is everyone who moved to the UK in 2025 (one square per 1%, roughly 8,000 people each).
The overwhelming majority, around 86 of every 100, arrived on visas the government issued on purpose: work, study, family.
Asylum by all other routes accounts for roughly 9 in 100.
And the small boats that dominate the news? About 5 in 100: 41,472 people in 2025, against gross immigration of 813,000.
The EU picture is similar: in 2024 the bloc issued 3.5 million first residence permits, against 239,000 irregular border detections, about 6% of the inflow.
Picture the people arriving. If the picture in your head comes from the news, it is a dinghy carrying young men from the Horn of Africa or the Middle East. That is a fair description of the boats. It covers about 5 in 100 arrivals. The mismatch shows up in what people believe about who already lives here: asked what share of the country is Muslim, Britons guess one in six. The census counts about one in fifteen.
These were the top nationalities on the small boats in 2025: Eritrea, Afghanistan, Iran, Sudan, Somalia. Dictatorships and wars, almost all of them. This is the list the news cameras see, and it comes to 41,472 people.
Now add everyone the UK admitted on purpose in the same year: 756,976 work, study and family visas. Watch the scale.
The largest origin country of migration to Britain is India: 154,570 visas, nearly four times every small boat arrival combined. The fifth largest is the United States.
And the lists move faster than the image does. Syrians led European asylum claims for a decade; within a year of Assad falling, Syrian applications had dropped 72% and the EU's largest origin country of asylum seekers was Venezuela.
In mid-2025, 56% of Britons said immigration had risen over the previous year. Only 16% expected it to fall. Here is what it actually did.
UK net migration ran at 200–330,000 a year through the 2010s.
After Brexit, the new visa system plus Ukraine and Hong Kong schemes produced an unprecedented wave, peaking at 944,000 in the year to March 2023. (The ONS initially estimated far less; the 2022 figure was later revised up 44%.)
Then visa rules tightened, and the wave broke: 331,000 by December 2024, 171,000 by December 2025, the lowest since the system began.
The European picture, by irregular route, monthly since 2009. The 2015–16 spike, Syria's war arriving via the Aegean, dwarfs everything since.
Detections fell from 380,000 (2023) to 178,000 (2025), and another 37% in the first half of 2026. Routes closed: Atlantic −63%, Balkans −42%, Syrians largely stopped leaving after Assad fell in December 2024.
One caveat the far right never adds: Frontex counts detections, not people. The same person crossing twice counts twice, which inflates the 2015 peak. The fall since is real either way.
In absolute numbers the UK ranks 5th in Europe for asylum applications. But countries come in very different sizes. Toggle to per-million and watch the order change.
Most refugees never reach a rich country, let alone Europe. 68% are hosted by low- and middle-income countries; 66% stay right next door to the country they fled. Countries holding 27% of the world's wealth host 80% of its refugees.
If the numbers are falling, why is concern at a decade high? Because, as Gerald Knaus puts it, images beat statistics, and every image lands on a story people have already heard. Alastair Campbell's three Ps (populism, polarisation, post-truth), plus a fourth: pictures.
Fifteen years of the YouGov issues tracker. Concern about immigration is not a function of arrivals; it's a function of events and imagery.
2015–16: the Aegean crisis, the Alan Kurdi photograph, the “Breaking Point” poster. Concern peaks with the referendum, then collapses after it, though migration itself barely changed.
2018–: the small-boats era. Each televised dinghy resets the story. Concern climbs as net migration falls.
August 2026, Ceuta: 50,000 people cross into a Spanish enclave in a day, egged on by viral rumours; 80+ drown; all are returned within 24 hours; not one reaches mainland Europe. Trump calls it an invasion; every far-right party in Europe claims the migrants were headed for their country. The pictures did the work the numbers never could.
Europe's exceptional asylum decade wasn't an “invasion from Africa”. It was two wars, Syria and Ukraine, with Vladimir Putin involved in both. When the wars ended or froze, the flows fell.
While the argument rages, people drown. Each dot below is ten lives lost or missing in the Mediterranean since 2014.
2024 was the deadliest year on record for migrants worldwide: 8,938 deaths. Meanwhile the safe alternative (resettlement of vetted refugees, the route an Afghan judge or a Sudanese family could actually take) has collapsed: down 57% in 2025, with the US ceiling cut to 7,500, the lowest ever.
The podcast's uncomfortable conclusion: borders can be controlled. The US just cut crossings ~90% by brutal means. The question for democracies is whether control can be humane.
The numbers in this essay all point one way: the crisis in Europe today is not primarily a crisis of arrivals. It is a crisis of perception, and perception, unlike war, is something democracies can actually do something about.