- Ten years after the UK voted to leave the EU, several key macroeconomic indicators remain under pressure. A new model by Stanford University economists estimates that by 2025, Brexit will have resulted in a cumulative loss of about 6% to 8% of the UK's GDP. The exchange rate of the pound against major currencies has still not returned to pre-referendum levels of 2016.
- There have been structural changes in the labor force and immigration patterns. Although net migration between the UK and the EU once turned negative, the number of non-EU immigrants has surged significantly due to domestic labor shortages, the influx of international students, and humanitarian visa programs, offsetting the expected effects of EU immigration restrictions.
- The administrative costs of foreign trade have risen significantly. Although the UK has gained the right to formulate independent trade policies, the EU's marginal influence on its economy has not diminished. Data from 2025 shows that the EU still accounts for 41% of the UK's total exports and 50% of its total imports, with a high dependency on the European continent for supply chains.
Slowing Macroeconomic Growth and Long-term Exchange Rate Pressure
Statistical models and historical data indicate that over the past decade, the UK's macroeconomic performance has been weak under multiple external shocks. Despite systemic risks such as the global pandemic, supply chain disruptions, and energy crises, the mainstream economic consensus still views Brexit as a core structural factor suppressing the UK's potential economic growth rate. The long-term weakness of the pound's exchange rate has directly increased the marginal cost of imported goods in the UK. Given the UK's heavy reliance on imported food and consumer goods, the depreciation effect of the exchange rate continues to transmit to the end consumer market, exacerbating macro inflationary pressures and compressing residents' real purchasing power.
Labor Market Restructuring and Immigration Substitution Effects
In the labor market, the Brexit camp's previous advocacy for tightening marginal immigration policies has not alleviated the pressure on domestic public services as expected. Due to irreversible structural labor shortages in some domestic industries, the UK government has had to adjust visa issuance policies. As a result, after the exit of EU labor, non-EU immigrants have filled the labor gap, and the overall net migration scale has not substantially decreased. This has led early Brexit supporters to question the effectiveness of government policy implementation, with the costs of restructuring the labor supply being shared across industries.
Trade Sovereignty Transfer and Supply Chain Administrative Barriers
In foreign trade relations, although the UK has legally established an independent position for free trade agreement negotiations, its geopolitical economic reality makes it difficult to detach from its dependence on the EU single market. The latest trade flow data from 2025 confirms that the EU continues to maintain its position as the UK's largest trading partner. Meanwhile, UK businesses face more cumbersome customs declaration procedures, rules of origin checks, and compliance certification requirements when exporting goods to the European continent. These non-tariff barriers directly lengthen logistics cycles and increase the daily operating costs of small and medium-sized enterprises.
Shortened Political Stability Cycles and Policy Expectation Reshaping
Brexit has not only reshaped the UK's economic fundamentals but has also profoundly impacted the country's political system and policy continuity. Since the 2016 referendum, the UK political arena has experienced unprecedented high-frequency turbulence, with six prime ministers succeeding each other within a decade, and showing significant volatility in domestic and foreign policies. This political uncertainty has, to some extent, weakened overseas capital's confidence in allocating UK domestic assets. If the UK-EU bilateral trade framework is not further optimized in the future, the valuation premium of UK long-term assets may continue to face the risk of being re-evaluated.
