Why George Osborne now advocates rejoining the customs union
George Osborne served as Chancellor of the Exchequer in David Cameron’s government that held the 2016 referendum. He opposed Brexit at the time and resigned shortly after the vote. In September 2026 he described the decision to leave the customs union as one whose consequences were never properly debated. Osborne said the move devastated small and medium-sized businesses and caused British trade to drop sharply. He argued that re-entry would be a straightforward policy choice because it would not require accepting free movement of people. The former minister stressed that the step had not featured in the original referendum discussion and that voters had not been told the customs union would be abandoned. He presented the change as a simple reversal that could begin to repair the damage already done to trading relationships.
Economic consequences cited after leaving the customs union
Osborne pointed to the absence of new major trade agreements, particularly with the United States, that had been promised during the referendum campaign. He stated that the justification for departure has not materialised in practice. Trade frictions have increased for firms that previously relied on frictionless access to EU markets. According to his assessment, these barriers have produced lasting damage rather than temporary adjustment costs. He specifically noted that small and medium-sized businesses have suffered most because they lack the resources to navigate new paperwork and origin rules. British trade overall has gone off a cliff, he said, with the expected compensatory deals failing to appear. The result is a structural weakening of the economy rather than a short-term shock that would naturally fade.
Distinction between customs union and single market membership
Osborne emphasised that customs union membership differs from full single market participation. The customs union governs tariffs and rules of origin but does not impose obligations on labour mobility. He noted that free movement of people remains a politically sensitive issue in the UK. Therefore, rejoining the customs union alone could be presented as a narrower and more achievable step than broader single market re-entry. He described the choice as relatively uncomplicated precisely because it avoids reopening the free-movement question that continues to divide opinion at home. This separation, he argued, makes the customs union route both technically simpler and politically less contested than returning to the single market.
Feasibility of re-entry a decade after the referendum
Osborne acknowledged that reversing course ten years after the vote would face political and procedural hurdles. He nevertheless described the decision as technically simple compared with other forms of closer EU alignment. No new referendum would be required for customs union membership under current UK constitutional practice. The main obstacles would be domestic political positioning rather than legal complexity with the EU. He recognised that any reversal would be difficult after such a long period, yet maintained that the narrow scope of the customs union makes it the quickest available route to easing trade frictions.
Political reactions and current government stance
Osborne’s comments drew attention because they came from a senior Conservative figure who had supported the original referendum process. The governing Labour administration has maintained that it will not rejoin the customs union. Critics have asked why the government continues to rule out an option that a former Conservative chancellor now presents as obvious. Supporters of the current red lines argue that any form of closer EU ties would reopen divisions from the referendum period. The intervention has therefore highlighted ongoing splits inside the Conservative Party and raised questions about whether the existing policy boundaries remain sustainable.
Frequently asked questions
What exactly did George Osborne propose in September 2026?
He called for the UK to rejoin the EU customs union as the quickest route to reversing post-Brexit trade losses, without requiring free movement of people.
Did Osborne support Brexit at the time of the 2016 referendum?
No. He campaigned against leaving the EU and resigned as Chancellor after the result.
Why does Osborne say leaving the customs union was especially damaging?
He stated that it removed frictionless trade arrangements that had never been properly explained to voters and that promised alternative deals with the US did not materialise.
Would rejoining the customs union require accepting free movement?
Osborne argued it would not, because customs union rules cover tariffs and origin requirements rather than labour mobility.
When did the UK formally leave the EU?
The UK left the EU on 1 January 2020 after a transition period that followed the 2016 referendum.
