UK Prime Minister Keir Starmer has ruled out the possibility of rejoining the European Union’s customs union, stating that it would be unreasonable to jeopardize the country’s trade agreement with the United States, according to The Guardian on 10 December 2025.
Context and Reactions
Ed Davey, leader of the Liberal Democrats, expressed concern over the new U.S. national security strategy, calling for Starmer to warn President Donald Trump that any interference by the United States in European democracy would be completely unacceptable.
President Trump, in a recent Politico interview, described several European countries as “in decline” and characterized European leaders as “weak.”
Starmer responded that Europe remains strong, grounded in freedom and democratic values.
Customs Union and Trade Considerations
Regarding the customs union, Starmer emphasized that the UK has existing trade agreements, including a stronger deal with the United States than with any other country.
“It would not be reasonable to break that agreement just to rejoin the EU customs union,” Starmer said.
He also reaffirmed that the Labour government’s manifesto includes commitments regarding the customs union and single market, implicitly signaling that the UK will not return to the EU customs framework.
Davey warned that if Starmer continues to oppose rejoining the EU customs union, he could face political pressure that threatens his leadership within a year.
