Ten years after the Brexit referendum, the United Kingdom faces a growing public and political debate over whether to rejoin the European Union. According to Anand Menon, director of the think tank “UK in a Changing Europe,” the primary driver of this shift is the realization that the departure has failed to deliver its promised economic benefits. Data suggests a solid majority of British voters now view the exit as a mistake.
Why is the “Brientro” debate gaining momentum?
The core of the current political discussion is the gap between the 2016 campaign promises and the subsequent reality. Proponents of the exit originally envisioned a “Singapore-on-Thames” model with a surge in national funding for the National Health Service (NHS). Instead, as noted by researchers, the UK has faced a decade of stagnant growth. While the “catastrophe” predicted by some critics—such as mass unemployment or a complete collapse of the City of London—did not occur, the economy has suffered from a cumulative drag on trade, investment, and productivity.

Despite the overall economic slowdown, the UK’s services sector, which accounts for nearly 60% of exports, saw a 48% increase in output, helping Britain nearly match the United States in global financial and professional service rankings.
How has Brexit impacted the UK economy?
Quantifying the exact cost of leaving the EU is difficult because the transition coincided with the COVID-19 pandemic and the war in Ukraine. The Office for Budget Responsibility (OBR) estimates that the UK economy will remain 4% smaller in the long term compared to a scenario where the country had remained in the European Union. Conversely, other academic studies place this impact in a wider range, between 2.5% and 8% of GDP.
A comparison of economic performance reveals a nuanced picture. While the UK faced new bureaucratic barriers that caused an 8% drop in goods exports, its overall economic growth rate over the last decade has actually outpaced major European peers like Germany and Italy. This suggests that while Brexit acted as a “fastidious” brake on expansion, it did not trigger the total systemic collapse initially feared by opponents.
What are the hurdles to rejoining the EU?
Rejoining the European Union is not a simple administrative reversal, according to analysts at “UK in a Changing Europe.” Brussels is unlikely to offer an “à la carte” membership. Any return to the Single Market would likely require the restoration of the freedom of movement—a policy that remains highly contentious given that immigration from outside the EU has reached 1.5 million arrivals annually.
Furthermore, a full return would require the UK to abandon the pound sterling, join the Schengen Area, and significantly increase its budget contributions. Additionally, a decade of “regulatory divergence” has allowed the UK to establish competitive advantages in artificial intelligence, biomedicine, and finance. As Menon notes, any path forward is “nasty” and involves difficult trade-offs between economic integration and national autonomy.
Pro Tip: Tracking the Policy Shift
Watch for the trajectory of the current Labour government. Prime Minister Keir Starmer has prioritized closer ties with Brussels, and potential successors like Andy Burnham have signaled even deeper alignment, potentially leading to a decade-long debate on the specific terms of a future relationship.

Frequently Asked Questions
- Is the UK officially planning to rejoin the EU? No. While the current government is seeking closer alignment, there is no formal application to rejoin the European Union.
- Did Brexit cause a recession in the UK? No. While the economy has grown more slowly than it might have otherwise, it has avoided a mass-unemployment recession.
- What is the biggest economic challenge post-Brexit? The main challenges are increased bureaucratic costs for small agro-food businesses and a general decline in long-term trade and investment productivity.
How do you view the future of the UK-EU relationship? Share your thoughts in the comments below or subscribe to our newsletter for deep-dive analysis on European trade policy.
