UK confronts Brexit legacy ten years after referendum
A decade after the referendum, Brexit is less a finished rupture than a continuing negotiation over trade, mobility, security and EU influence.
In 30 seconds
- The UK Electoral Commission records Leave winning the 2016 referendum by 17,410,742 votes to 16,141,241.
- According to EUR-Lex, the Trade and Cooperation Agreement entered into force on 1 May 2021.
- The Centre for Economic Performance found the 2021 regime caused a persistent fall in relative UK imports from the EU.
- The UK government said its 2025 EU agreement kept Britain outside the single market and customs union.
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.
Background
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 wider picture
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 happens next
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.
What to do
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.
The Belgian angle
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.
How we got here
- 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.
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