26th December 2025
Brexit has reshaped UK trade patterns, introducing new trade frictions with the EU — the UK's largest trading partner.
All of which will continue to affect key parts of the economy. Even though the Trade and Cooperation Agreement (TCA) between the UK and EU removes tariffs on most goods, it doesn’t replicate single‑market or customs‑union privileges.
Instead, regulatory divergence, customs checks and rules‑of‑origin requirements have increased costs for many businesses selling into the EU and handling just‑in‑time supply chains. These added frictions have particularly affected goods exports, and this non‑tariff barrier effect remains significant in 2025.
Several studies have concluded that UK trade openness — trade as a share of GDP — has declined post‑Brexit, and exports of goods to the EU are below pre‑Brexit levels even years after the transition period ended. The additional bureaucracy and border checks result in higher costs and slower delivery times for exporters, especially smaller firms without the scale to absorb those costs.
This trade friction has translated into a structural shift: goods exports have lagged behind both pre‑Brexit trends and peer economies, and exports overall have been a drag on GDP growth while services have grown. Research from think tanks like the Centre for European Reform shows that exports are one of the main reasons UK GDP remains below its potential compared with other advanced economies, with goods export declines outweighing stronger services flows.
At the same time, recent government and business efforts have sought to expand trade beyond Europe. For example, the UK secured an upgraded trade deal with South Korea aimed at boosting exports of cars, salmon, pharmaceuticals, and digital services. This revised agreement should help key UK sectors by lowering tariffs and updating rules of origin, and is estimated to contribute around £400 million annually to the UK economy.
The UK has also pursued deals with India and other partners and is negotiating agreements with Gulf countries, forming part of a broader global trade diversification strategy. These deals signal that while Brexit has complicated UK-EU trade, the UK is now deepening trade ties in Asia‑Pacific and beyond.
Sector‑Specific Effects of Brexit and Global Trade Conditions
Manufacturing: Brexit‑related trade barriers have added complexity to supply chains, particularly for automotive and industrial goods, where inputs frequently cross borders. Increased customs checks and regulatory divergence have raised production costs and slowed exports, partly offsetting tariff‑free access to the EU. Trade tensions, such as potential future US tariffs on autos and pharmaceuticals, add further uncertainty to manufacturers’ export prospects and investment decisions.
Exports of Goods: UK food and drink exports to the EU have fallen significantly since Brexit, with some reports showing declines of over 30% in certain product categories. Clearly, export flows to the EU — while still large — are underperforming relative to their pre‑Brexit trajectory, and smaller exporters find new compliance requirements especially costly.
Services: The UK’s services sector — particularly financial and professional services — remains strong and resilient, but it has also faced challenges in the post‑Brexit era, especially around market access and regulatory equivalence. Mutual recognition of professional qualifications and licensing remains limited, constraining the ease with which UK service providers can operate in EU markets. Research shows that services exports to the EU have fallen by around 15–16% in sectors affected by these barriers, and overall UK services exports are estimated to be a few percentage points lower than they would have been without Brexit.
Despite this, the UK has sustained robust services exports, and LSE research points out that strong performance in sectors where trade is still relatively unrestricted has helped offset some goods export weakness.
Foreign Investment: Brexit also appears to have reduced business investment compared to a hypothetical "no‑Brexit" scenario. Recent research from King’s College London, Stanford and other academic partners estimates that UK business investment is 12–18 % lower than it likely would have been absent Brexit. This drag on investment has dampened capacity expansion and productivity improvements — key drivers of long‑term growth.
Foreign direct investment flows also experienced disruptions in the immediate post‑referendum period, as some multinational firms re‑evaluated their UK operations to maintain easier access to the EU market. While some investment has rebounded and the UK continues to attract acquisitions and deal activity, concerns about the UK’s relative attractiveness for investment linger among some business leaders.
Global Trade Conditions Beyond Brexit
Brexit is not the only trade factor shaping UK sector performance. Broader global trade conditions, including US‑China tensions and rising tariffs on some products, affect UK exporters. For example, recently re‑introduced tariffs in the United States on Scotch whisky have hurt exports to one of the UK’s key foreign markets, prompting distilleries to scale back production and rethink expansion.
Global supply chain shifts — influenced by geopolitics, pandemic legacies, and companies diversifying away from single‑source dependencies — also affect UK industries. Businesses across manufacturing and agriculture are adapting their supply chains to reduce vulnerability, but this often comes with higher costs and adjustment pain.
Balancing Challenges and Opportunities
Despite these headwinds, the UK has opportunities to adapt and thrive. Trade diversification, new bilateral agreements (like the South Korea deal), and continued strength in high‑value services and tech exports all support resilience. Free trade agreements with major partners, expansion in digital and services trade, and the ability to set independent trade policy — benefits cited by many proponents of post‑Brexit strategy — could help the UK capture growth in fast‑growing global markets.
Moreover, sectors such as renewables, advanced technology, and pharmaceuticals show potential for long‑term global competitiveness, especially as the UK invests in innovation clusters and R&D. While Brexit’s trade barriers and investment effects are real and measurable, they are only one part of a broader economic landscape shaped by globalisation, geopolitics, and technological change.
Brexit has introduced significant trade and regulatory frictions with the EU, reducing UK exports and investment relative to a counterfactual no‑Brexit scenario, particularly in goods and some services where market access is constrained. New and upgraded global trade partnerships offer offsets over time, with bilateral deals promising incremental gains for automotive, food and drink, and digital services. On the investment side, lower business investment compared with what might have occurred without Brexit has restrained productivity and capacity growth, but selective foreign acquisitions and capital inflows indicate continued global interest in UK assets.
Overall, Brexit effects are visible in trade and investment patterns, but the UK economy is adapting through service sector strength, export diversification, and renewed global trade ties — all of which will shape sector‑level growth and resilience in the coming decade.