Labour’s Future in Customs Union: A Strategic Shift?

‘The only idea around’: will Labour return to a customs union with the EU?

London, December 09, 2025

Labour has declined to immediately reinstate the UK’s membership in a customs union with the European Union, deeming such a move premature amid ongoing Brexit-related negotiations. The party underscores the importance of consolidating agreements signed earlier this year and advancing technical deals before revisiting customs union discussions.

Labour’s Strategic Approach to Customs Union Talks
The Labour government emphasizes delivering on the “Common Understanding” agreement reached in May 2025, which encompasses key areas such as youth mobility, agricultural standards, and climate mechanisms. Officials caution that reopening customs union negotiations now could disrupt progress and prove counterproductive.

European Union’s Preference for Gradual Progress
The EU has shown reluctance to entertain immediate customs union discussions, preferring incremental, trust-building steps that follow delivering existing agreements. Brussels continues to prioritize operational frameworks over revisiting broader customs arrangements.

Diverse Views Within UK Political Circles
Within Labour ranks, some senior figures, including advisers like David Lammy, exhibit openness to a future customs union. This perspective partially aligns with Liberal Democrat positions advocating closer economic ties with the EU. However, skepticism remains concerning the economic impact, given that much UK-EU trade is tariff-free under current arrangements. Critics also highlight the complexity of adopting EU external tariffs on third-country goods and persistent technical barriers that would remain even within a customs union framework.

Trade and Sovereignty Considerations Persist
Even if a customs union were reestablished, regulatory alignments and border checks would not entirely disappear unless complemented by further integration into the EU Single Market and other regulatory frameworks. This complicates the trade-off between smoother trade and maintaining UK sovereignty over standards and policies.

Labour’s current stance reflects a cautious and pragmatic approach aimed at solidifying gains and building mutual trust with the EU. Future moves regarding a customs union will likely depend on the success of ongoing negotiations and demonstrable benefits to the UK’s economic and political interests.