Mixed Signals Paint a Complex Picture of Post-Brexit Britain
Nearly four years after the full implementation of Brexit, the United Kingdom’s economic performance continues to reflect the complex legacy of leaving the European Union. As we move through 2025, the economic data presents a mixed picture of modest recovery coupled with persistent structural challenges that trace their roots back to the 2016 referendum decision.
Bottom Line Up Front: The post-Brexit trading relationship between the UK and EU, as set out in the ‘Trade and Cooperation Agreement’ (TCA) that came into effect on 1 January 2021, will reduce long-run productivity by 4 per cent relative to remaining in the EU, according to the Office for Budget Responsibility. However, recent economic indicators suggest the UK economy is stabilising after a challenging period, with growth returning but remaining below historical averages.
Current Economic Performance: A Cautious Recovery
The UK economy demonstrated resilience in the first quarter of 2025, with UK gross domestic product (GDP) estimated to have grown by 0.7% in Quarter 1 (Jan to Mar) 2025. This growth was primarily driven by the services sector, which expanded by 0.7%, alongside production growth of 1.3% and construction sector growth of 0.3%.
However, more recent monthly data reveals ongoing volatility. Monthly real gross domestic product (GDP) is estimated to have fallen by 0.1% in May 2025, following an unrevised fall of 0.3% in April 2025, highlighting the fragile nature of the recovery.
The labour market continues to face headwinds, with 1.67 million people unemployed in March to May 2025, up 124,000 from the year before. The unemployment rate was 4.7%. Despite this increase, wage growth remains robust, with average wages excluding bonuses 5.0% higher in the three months to May 2025 compared with the year before.
Brexit’s Measurable Economic Impact
The economic consequences of Brexit have become increasingly clear through comprehensive analysis. Independent report by Cambridge Econometrics, commissioned by City Hall, shows London has 290,000 fewer jobs than if Brexit had not taken place, with half the total two million job losses nationwide coming in the financial services and construction sectors.
The financial impact extends beyond employment. The average Briton was nearly £2,000 worse off in 2023, while the average Londoner was nearly £3,400 worse off last year as a result of Brexit. More concerning for the long-term outlook, the economic damage is only going to get worse – with more than £300bn set to be wiped off the value of the UK’s economy by 2035 if no action is taken.
Trade Performance Struggles
Brexit’s impact on trade relationships has been particularly pronounced. Goods exports to the EU are still 16% lower in real terms, compared to the end of 2019, according to Moody’s Analytics. Surprisingly, goods exports to non-EU countries have actually performed even worse, suggesting broader competitive challenges beyond the immediate Brexit effects.
The structural changes in trade patterns reflect deeper economic adjustments. Imports from the EU to the UK have dropped from 52% to 40%, while imports from China and the United-States have increased from 9% to 13% and from 9% to 12% respectively.
Inflation and Cost of Living Pressures
Inflation remains a persistent challenge for UK households. CPI inflation was 3.6% in June 2025, up from 3.4% in May, well above the Bank of England’s 2% target. The Office for Budget Responsibility forecasts continued pressure, expecting monthly inflation up to a peak of 3.8 per cent in July 2025 due to higher oil prices and regulated utility costs.
Brexit has been identified as a key contributor to these inflationary pressures. Brexit is recognized as a key contributor to the 2023 cost-of-living crisis, with its effects on supply chains and labour markets continuing to influence price levels across the economy.
Investment and Productivity Challenges
One of Brexit’s most significant long-term impacts has been on business investment and productivity growth. Investment stagnated for five years, before it returned to growth, reflecting the uncertainty that surrounded the transition period and new trading arrangements.
Productivity challenges remain acute. Productivity growth in the UK has been particularly weak since the Great Financial Crisis, especially in the financial sector. This weakness has been exacerbated by Brexit-related factors, including reduced labour supply and ongoing business uncertainty.
However, there are signs of improvement. Investment is now rising again and has surpassed its pre-Brexit referendum levels, suggesting businesses are beginning to adapt to the new economic environment and make longer-term investment decisions.
Looking Ahead: Forecasts and Challenges
Economic forecasters present a cautiously optimistic outlook for the UK, despite ongoing Brexit-related headwinds. The International Monetary Fund projects real GDP growth at 0.7 percent in 2024, before rising to 1.5 percent in 2025.
S&P Global Ratings offers a similar trajectory, forecasting GDP to expand by 0.3% in 2024, before rising to 1.4% in 2025 and 1.7% annually in 2026 and 2027. This gradual acceleration reflects expectations of monetary policy easing and improved business confidence.
Migration and Labour Market Dynamics
Interestingly, migration patterns have evolved differently than initially anticipated after Brexit. We now assume net migration settles at 340,000 a year in the medium term, based on the ONS 2022-based population projections, significantly higher than earlier post-Brexit projections. This increase in migration from non-EU countries has helped offset some labour market pressures but hasn’t fully addressed skill shortages in certain sectors.
Long-Term Structural Adjustments
The UK economy continues to undergo structural changes stemming from Brexit. Most of the large impacts are likely behind us, according to economic analysts, but Brexit is going to have a long-term impact on UK growth beyond the initial fallout seen in trade.
The economy faces several enduring challenges including a smaller pool of workers and weaker competition leading to lower productivity, the capacity of the UK to grow will remain durably lower. These structural factors suggest that while the acute phase of Brexit disruption may be passing, its effects on the UK’s economic potential will persist.
Policy Responses and Future Directions
Addressing these challenges requires sustained policy focus. The Government needs to start mitigating the impact of Brexit by tackling London’s labour shortage, taking an approach to migration that is “informed by evidence, not prejudice”, according to London’s Mayor.
The government’s economic strategy increasingly focuses on investment incentives and productivity improvements. Recent measures include capital allowances schemes and planning reforms designed to stimulate business investment and improve economic efficiency.
Conclusion: Adapting to the New Economic Reality
As the UK economy navigates its post-Brexit trajectory in 2025, the data reveals a complex picture of gradual adaptation rather than dramatic transformation. While growth has returned and some metrics show improvement, the underlying productivity challenges and structural changes continue to constrain the economy’s performance relative to its European peers.
Perhaps the best estimate of the negative impact on Brexit on UK GDP to date is 2–3% of GDP, representing a permanent reduction in economic output. However, with investment recovering and businesses adapting to new trading relationships, the acute phase of Brexit-related disruption appears to be moderating.
The challenge ahead lies in maximising the UK’s economic potential within its new framework while addressing the persistent productivity and competitiveness issues that have become more pronounced since leaving the EU. Success will depend on policy choices that can offset Brexit’s structural impacts through enhanced innovation, investment, and strategic economic partnerships.
The economic outlook remains highly dependent on global conditions, geopolitical stability, and the government’s ability to implement growth-enhancing policies that can help the UK economy thrive in its post-Brexit configuration.
