UK Politics and Brexit: Origins to Today

• David Cameron pledged an in/out EU referendum in 2013; held it in June 2016; the Leave campaign won 52 %–48 %.
• Three Conservative prime ministers (May, Johnson, Truss) and a Labour PM (Starmer) have governed since; Brexit has been the defining issue for most of that period.
• The UK formally left the EU on 31 January 2020; the Trade and Cooperation Agreement (TCA) began on 1 January 2021.
• The Northern Ireland question has been the hardest single-issue legacy, leading to the Northern Ireland Protocol (2020) and its renegotiation as the Windsor Framework (2023).
• The 2024 election produced a Labour landslide; the new government has explicitly ruled out re-joining the single market or customs union but is pursuing selective improvements.
• Independent forecasters (Office for Budget Responsibility, Bank of England) estimate Brexit has reduced UK trade intensity and productivity vs. counterfactual; the precise scale is debated.
• For Belgium and the EU, the file matters for Channel trade, financial services equivalence, Erasmus replacement, and security cooperation.

The UK is in the second year of a Labour government elected in July 2024 with a large majority. The administration''s position on Brexit is "make Brexit work" — no return to the single market or customs union, but pragmatic improvements: a veterinary agreement, a youth-mobility framework being explored, defence and security cooperation, energy market alignment. The Northern Ireland Protocol / Windsor Framework continues to operate with ongoing technical issues. Economic indicators show persistent productivity drag attributed to Brexit by independent forecasters (OBR), though the precise attribution is debated.

What changed recently: UK–EU summit relaunched the political dialogue; selective sectoral alignment discussions; cautious warming of tone on both sides.

What is still unknown: how far selective alignment can go without re-opening the single-market debate; durability of the political consensus that Brexit is settled.

Confidence: high on policy posture; medium on the long-run economic impact (attribution to Brexit vs. other shocks).

Trade. Belgium is one of the most exposed EU economies to UK trade per capita — Belgian exporters report TCA paperwork burden persisting four years in. The Port of Zeebrugge handles Channel ro-ro traffic.

Diaspora. Around 30 000 Belgians live in the UK; reciprocal post-Brexit residency arrangements are well-established but administrative friction persists.

Erasmus. The UK left Erasmus+ in 2020; Belgian universities have adapted via bilateral agreements; the Labour government has not (as of this writing) re-joined.

Financial services. Brussels has been one of the main winners of post-Brexit financial-services relocations from the City, alongside Paris, Frankfurt, Dublin, Amsterdam and Luxembourg.

Security. UK–EU security cooperation has been a quiet success of the post-TCA period — Belgium hosts EU and NATO bodies relevant to that cooperation.

What is agreed: the 2016 referendum result (52 %–48 % Leave); the UK left on 31 January 2020; the TCA governs current trade; the Windsor Framework now operates in Northern Ireland.

What is disputed: the scale of the economic impact attributable specifically to Brexit (vs. COVID, vs. global energy shock, vs. domestic policy); whether selective single-market alignment is politically deliverable; the political risk of re-opening the Brexit question.

What is unknown: how far the Labour government''s "reset" goes in practice; whether either main party will rethink the position over a longer horizon; the long-run trajectory of UK–EU security cooperation under shifting US policy.

Common misinformation to watch for: cherry-picked economic figures on either side; conflation of "single market" with "customs union" with "TCA"; mischaracterisation of Northern Ireland Protocol mechanics.

• 2016 referendum results by local authority (UK Electoral Commission)
• UK–EU trade volumes pre/post-TCA (HMRC + Eurostat)
• OBR Brexit impact estimates (Economic and Fiscal Outlook)
• Northern Ireland border infrastructure status (UK government + EU)