UK confronts Brexit legacy ten years after referendum
Ten years after the United Kingdom voted to leave the European Union, Brexit has shifted from a sovereignty project into a test of how much economic distance either side can tolerate. The UK Electoral Commission's official result shows Leave won the 23 June 2016 referendum by 17,410,742 votes to 16,141,241, on 72.2% turnout. The legal break came later: the Trade and Cooperation Agreement created a tariff-free but paperwork-heavy relationship after the UK left the single market and customs union. The Centre for Economic Performance found that the 2021 trade regime caused a persistent fall in relative UK imports from the EU and disrupted small exporters. The UK government's 2025 EU reset sought to ease food checks, connect carbon markets and deepen defence cooperation, while keeping Britain outside the single market and customs union. For Belgium, the issue remains practical: trade, ports, travellers, universities and Brussels-based EU diplomacy all still absorb the costs of a thinner relationship.
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UK Politics and Brexit: Origins to Today
A decade-and-a-half of British politics through the lens of Brexit — from David Cameron's 2013 EU pledge through the 2016 referendum, the long Withdrawal Agreement process, the 2020 exit, and into the post-Brexit Labour government's relationship with Brussels.
About this story
Brexit (the UK's withdrawal from the European Union, completed legally on 31 January 2020) followed the 23 June 2016 referendum. The United Kingdom (England, Scotland, Wales and Northern Ireland) was an EU member from 1973 until withdrawal. The European Union (27-country political and single-market bloc headquartered institutionally in Brussels, Luxembourg and Strasbourg) negotiated Brexit as a collective process. The Trade and Cooperation Agreement (EU-UK treaty applied from 1 January 2021 and in force from 1 May 2021) governs most post-Brexit trade and cooperation. Keir Starmer (UK prime minister since 2024) has pursued closer EU ties without rejoining core EU structures. Ursula von der Leyen (European Commission president since 2019) represents the EU executive in the reset. The Centre for Economic Performance (London School of Economics research centre) studies Brexit's trade effects. The UK Electoral Commission (independent election regulator) certified the referendum totals.
How to read this story
The history
The UK joined the European Communities on 1 January 1973 and held an earlier membership referendum in 1975, when voters backed staying in. The 2016 referendum reversed that settlement: the UK Electoral Commission records 17,410,742 Leave votes and 16,141,241 Remain votes. Theresa May triggered Article 50 on 29 March 2017; the UK left on 31 January 2020; the transition ended on 31 December 2020. According to EUR-Lex, the Trade and Cooperation Agreement then became the main EU-UK legal framework after provisional application from 1 January 2021 and entry into force on 1 May 2021.
The geopolitics
The reset sits inside a harsher European security environment shaped by Russia's war against Ukraine, defence-industrial pressure and global trade fragmentation. The UK is outside the EU but remains a major NATO power, making defence cooperation attractive to Brussels even as the EU protects the integrity of the single market.
Why now
The France 24 lead is tied to the approaching ten-year anniversary of the 23 June 2016 referendum. The timing also follows the UK government's 2025 reset agreement and continuing sector talks on how much post-Brexit friction can be removed.
What to watch
Watch for concrete EU-UK texts on food checks, emissions trading, youth mobility, Erasmus-related cooperation, defence procurement and border procedures. The political signal to monitor is whether London keeps its no-single-market line while asking Brussels for deeper sectoral access.
Regional impact
At EU level, the Commission and Council manage the UK relationship as a third-country file covering trade, security, mobility and carbon-market talks. At Belgian federal and regional level, the impact is more commercial and operational: customs, port logistics, exporters and sector agencies in Flanders, Brussels and Wallonia deal with practical market access. The UK's trade statistics show Belgium ranked among its top goods export and import markets in 2025, making the Belgian effect concentrated in trade-facing sectors rather than constitutional politics.
Local impact
The clearest local Belgian impact is around Antwerp-Bruges and Zeebrugge, where trade-facing logistics firms handle UK-linked goods movements. The UK Department for Business and Trade's 2026 statistics show Belgium remained among the UK's top goods export and import markets in 2025, so customs simplification is commercially relevant even when Belgium is not the political protagonist.
International angle
Brexit remains the EU's only completed member-state withdrawal and a live case study in European disintegration. The central question is no longer whether the UK has left, but how a large European economy cooperates with the EU on security, climate, food standards and mobility while staying outside core EU legal structures.
What this means for you
Nothing changes automatically for Belgian readers because of the anniversary. The practical point is to track sector deals: exporters may see reduced paperwork if food and customs arrangements advance; travellers and students could benefit if mobility talks produce rules; businesses should still plan around the existing third-country framework until formal changes are adopted.
What happens next
EU and UK negotiators are expected to keep turning the 2025 reset into sector-specific arrangements on food standards, carbon markets, youth mobility, defence procurement and law-enforcement cooperation. The next test is implementation: whether technical deals reduce costs for firms and travellers without reopening the British political battle over single-market membership.
Potential consequences
A managed reset could lower some costs for food exporters, reduce carbon-border frictions, improve defence cooperation and make travel or study easier. But it could also lock in an awkward middle position: the UK follows selected EU rules to regain market access while having limited influence over them. For Belgium, the upside would be smoother trade and travel; the constraint is that most change depends on EU-UK bargaining, not Belgian policy alone.
Opposing perspectives
- UK government / Starmer administration
The UK government's May 2025 statement presents the reset as a pragmatic correction: fewer food checks, linked carbon markets, defence cooperation and easier travel can reduce friction while respecting manifesto red lines against rejoining the single market, customs union or free movement.
- EU institutions
The European Commission's strongest frame is that the UK is now a close third-country partner, not a semi-member. Cooperation is welcome where it protects the single market, preserves fair competition and strengthens European security, but market access depends on enforceable rules.
- Small exporters and trade researchers
The Centre for Economic Performance research gives the sceptical economic frame: even tariff-free Brexit introduced non-tariff costs that large firms can absorb more easily than small exporters, so any reset that leaves customs and regulatory borders in place only partly repairs the damage.
Timeline
- 1973-01-01·The United Kingdom joined the European Communities.
- 2016-06-23·UK voters backed leaving the European Union in a national referendum.
- 2017-03-29·The UK triggered Article 50 to start the withdrawal process.
- 2020-01-31·The UK formally left the European Union.
- 2021-01-01·The Trade and Cooperation Agreement began provisional application after the transition period ended.
- 2021-05-01·The Trade and Cooperation Agreement entered into force.
- 2025-05-19·The UK government announced a new EU-UK reset agreement in London.
- 2026-06-23·The referendum reaches its ten-year anniversary.
Glossary
- Single market
- The EU system allowing goods, services, capital and people to move with common rules and limited internal barriers.
- Customs union
- A trade area with common external tariffs and no customs duties between members.
- Trade and Cooperation Agreement
- The main EU-UK treaty governing post-Brexit trade and cooperation since 2021.
- Rules of origin
- Criteria used to decide whether a product qualifies for tariff-free treatment under a trade agreement.
- SPS agreement
- A sanitary and phytosanitary arrangement covering rules for animals, plants, food safety and related border checks.
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This briefing was prepared with AI assistance and reviewed by a Belgium Impulse editor before publication. methodology.