(Bloomberg) — The number of deaths in Britain this year is set to exceed those born in the country, the Resolution Foundation said, in what the think tank described as a permanent shift that would increase Britain’s reliance on immigration.
Britain will see its birth rate fall in 2026, the Resolution Foundation projected as part of its annual economic outlook released on Monday. That gap “will continue to widen by an ever-widening margin, forever closing a chapter on UK demography” that stretches back at least to the early 20th century, the research institute said.
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At the height of the Covid-19 pandemic in 2020 and again in 2023, the local population has grown slightly in each of the past two years, with UK deaths exceeding births, the Resolution Foundation estimates. After 2026, any population growth “will come from international net migration,” the think tank said.
The report shows the stakes of the debate gripping Britain as Prime Minister Keir Starr seeks to reverse Nigel Farage’s anti-immigration reform UK rise in opinion polls. Stammer and his home secretary, Shabana Mahmood, have pledged to bring immigration down from record highs, risking a broader commitment from the Labor Party to end an extended period of economic stagnation.
Opposition to immigration – a key driver of Britain’s vote to leave the European Union a decade ago – has been exacerbated by increases in both legal immigration and the influx of asylum seekers across the English Channel. Net migration peaked at nearly a million a year after the then-Conservative government relaxed visa rules to accommodate a shortage of European workers and accommodate Ukrainians and Hong Kongers fleeing conflict at home.
The fall in the UK’s projected birth rate mirrors trends elsewhere in Europe and the developed world, which support policies to encourage women to have more children. The estimated population includes foreign-born families already in the UK as well as those who have lived in the country for generations.
“It can shift the conversation on immigration away from arguments about whether the country is already ‘full’ and whether we want to address population decline,” said Greg Thwaites, director of research at the Resolution Foundation. Thwaites acknowledged that the subject was “likely to remain politically charged”.
Britain has already seen a dramatic slowdown in population growth, largely due to increased visa restrictions imposed by former Conservative prime minister Rishi Sunak in the months before Stammer took office. Net migration fell to 204,000 in June 2025, and recent Home Office figures suggest it could fall further amid Starr’s efforts to discourage low-skilled workers and refugees from pursuing residency.