Ten years. That's how long it's been since 17.4 million Britons walked into polling stations and voted to leave the European Union. The morning after, the pound crashed harder than it had since Black Wednesday. David Cameron resigned. And the country began a slow, grinding transformation that's still playing out.
Now, with a decade of data in the rearview mirror, CNBC crunched the numbers. The charts tell a story that's messier, more complicated, and far less triumphant than either side predicted.
Growth: The gap that won't close
The first chart is the one that stings. Before the 2016 referendum, the UK economy was a pacesetter among G7 nations — growing faster than Germany, France, and Japan. Since 2016? It's been a laggard.
GDP per capita, adjusted for inflation, has grown just 6% over ten years. Compare that to the US, which has surged 18%. The IMF forecasts the UK will be the second-slowest growing advanced economy in 2027, ahead of only Japan.
The Brexit premium that made the UK a magnet for foreign investment? It's gone.
Business investment flatlined after the vote. Companies that once saw Britain as a gateway to Europe now see it as an island with paperwork. As one manufacturing CEO told me: "We used to serve 500 million customers from Birmingham. Now it's 67 million — with tariffs."
Trade: Red tape, not blue skies
Brexiteers promised a bonfire of regulations and a trade deal with China, India, and the US. The reality: total trade value with the EU dropped 15% between 2016 and 2025. New deals with Australia and New Zealand added barely a blip.
Customs declarations have gone from zero to 200 million a year. Small exporters simply gave up. "The paperwork costs more than the profit margin," one Cornish cheese exporter told me in 2023. She now sells only domestically.
The one bright spot? Services — particularly finance — have held up better than goods. London remains a global hub. But even that sector is bleeding talent to Amsterdam, Paris, and Dublin.
Immigration: The great contradiction
Here's the kicker. The Vote Leave slogan was "Take back control of our borders." Ten years on, net migration is running at over 600,000 a year — triple the level in 2015.
The difference? Free movement from the EU ended. So UK firms turned to India, Nigeria, and the Philippines. The new arrivals are younger, more likely to work in care homes and warehouses, and less likely to have a vote.
Meanwhile, the NHS is more dependent on foreign-born nurses than ever. One in six nurses trained abroad. The government's own data shows that without migration, the population would be shrinking.
"We didn't control immigration," said one former Vote Leave strategist, speaking anonymously. "We just changed where it comes from."
Sterling: A permanent discount
The pound never recovered. Before the vote, £1 bought $1.48. Today? Around $1.26. That means every British holiday abroad is more expensive. Every barrel of oil, every smartphone, every bag of coffee costs more.
Inflation spiked after the 2016 drop, then again during the pandemic. Real wages are barely higher than in 2008. The Resolution Foundation calculates the average worker has lost £1,800 a year in purchasing power since the vote.
The Bank of England insists the pound is "undervalued." Markets don't agree.
Politics: The wreckage is still burning
Brexit didn't just change the economy. It shattered the political system. Five prime ministers in ten years. Cabinet ministers cycling through like airport baggage. A Labour government now, but with a majority built on pro-EU votes in Scotland and London.
The 2019 Conservative landslide was built on "Get Brexit Done." But once it was done, the coalition collapsed. The divide isn't Left vs. Right anymore — it's Leave vs. Remain. Every issue, from housing to healthcare to Ukraine, gets refracted through that prism.
Northern Ireland, the most pro-Remain part of the UK, is now governed under a different set of rules than the rest of the country. The Windsor Framework patched the cracks, but the fundamental tension remains: Northern Ireland is in both the UK and the EU single market. That was never supposed to work.
The bottom line
Ten years on, the UK is poorer, more divided, and less influential than it was. The question that haunts Westminster is whether any of this was worth it.
For the Leavers, the answer is still yes — sovereignty matters more than GDP. For Remainers, the numbers speak for themselves.
But here's the uncomfortable truth that both sides avoid: The UK didn't just choose Brexit. It chose a vision of the future that ignored the data. And the data is having the last word.
