Speaking to The Guardian ahead of the tenth anniversary of the Brexit referendum next week, Michel Barnier said it would be “perfectly possible” for Britain to rejoin the European Union while keeping the pound and remaining outside the Schengen passport-free travel area.
The EU’s former chief Brexit negotiator pointed to existing precedents: Denmark has a permanent opt-out from the single currency; Sweden has stayed outside the Eurozone since 1995 without penalty. His remarks were a direct rebuttal of the Polish foreign minister, who had recently cast doubt on whether Britain could revive special terms at all. Barnier also proposed a new European security council sitting outside formal EU structures, with the UK, Ukraine, and Norway joining EU member states in cooperating on defence spending and AI investment.
Keir Starmer moved quickly to close the political window. He warned against “looking backwards” and reaffirmed that Labour will not rejoin the EU, the single market, or the customs union. That response was predictable and necessary for him politically. It did not erase the fact that Barnier’s comments had already shifted the terms of a debate Britain officially refuses to have.
The Old British Question Returns
The heart of the argument is not only legal. It is cultural.
Britain has always approached Europe through exceptions: rebates, opt-outs, and special arrangements designed to soften the political symbolism of full belonging. Barnier’s comments reopen an old question: if Britain ever came back, would it still try to come back as the exception that proves the rule? The pound and Schengen opt-out are not only administrative preferences. They are the old tokens of managed belonging, the proof that Britain was in but never fully of the project.
That is where the subject becomes more interesting than a technical re-entry debate. The Brexit project was sold partly as a revolt against constraint. Yet even the imagined path back seems to depend on preserving British distance from the continental norm. A country that frames its return through what it gets to avoid has not fully resolved its relationship with the thing it is returning to.
Starmer Closes the Window, Barnier Leaves It Ajar
Barnier said it was becoming “clearer every day” to British people that they would be stronger in Europe. Starmer’s response was to warn against “looking backwards” and reaffirm that Labour will not rejoin the EU, the single market, or the customs union. That position is politically necessary for him. It does not resolve the fact that Barnier’s comments had already shifted the terms of a debate Britain officially refuses to have.
The defence and security council proposal may be the more immediately actionable idea. It offers deeper UK-European cooperation without triggering the most politically contentious elements of formal re-entry. If it gains traction, it could reshape the practical relationship before anyone is ready to debate the bigger question. Barnier keeps the door intellectually open. He does not make the path politically easy.
The Door is Not Shut, but Not Clean Either
Barnier’s remarks weaken the claim that Britain would face automatic humiliation if it ever reconsidered re-entry. They also expose how unresolved the British European question still is. Even hypothetical return gets discussed through opt-outs, not through conviction. A country that spent years demanding special treatment before walking out is now being told the door remains open on recognisable terms.
Any future return would still be shaped by strategic bargaining, institutional precedent, and the memory of that departure. The tenth anniversary of the referendum next week will produce plenty of retrospective analysis. Barnier’s interview has already done something more uncomfortable: it has made the forward question feel less settled than most British politicians currently pretend.
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