Britain could rejoin the European Union without being forced to adopt the euro, but would have to accept freedom of movement and Brussels’ single market rules, the bloc’s former chief Brexit negotiator has warned. Michel Barnier said it was possible for the UK to negotiate an exemption from the requirement to adopt the single currency if it sought to reverse Brexit.

However, he made clear there could be no such flexibility over the EU’s other fundamental rules, meaning Britain would have to accept the free movement of people, goods, services and capital. Speaking to Sky News presenter Cathy Newman, Mr Barnier said: “It is perfectly possible to begin such a negotiation [on rejoining the EU] without any kind of obligation to take part in the euro.”

Although all new EU member states are legally required to commit to joining the euro area, Mr Barnier suggested Britain could negotiate a different arrangement. He said: “But what is, and what remains unnegotiable, is the condition to join the single market.

“There is no negotiation possible. No possible negotiation on any kind of cherry-picking or the single market ‘a la carte’.” He added: “The UK knows quite perfectly the condition to be part of and to rejoin the single market and the customs union.”

The comments represent a significant intervention in the debate over Britain’s future relationship with Brussels, reignited by Andy Burnham‘s calls for closer ties with the bloc. The Labour politician has advocated a closer economic relationship with the EU, while the Government has already embarked on a post-Brexit reset intended to reduce trade barriers and strengthen cooperation.

Michel Barnier was the EU’s Chief Brexit Negotiator (Image: Getty)

However, Mr Barnier’s intervention highlights the potential price of going further and seeking full EU membership again.

Freedom of movement was one of the most contentious issues during the Brexit referendum campaign in 2016, with supporters of leaving arguing that Britain should regain control over immigration and its borders.

Under the EU’s single market arrangements, however, the four freedoms are treated as inseparable.

Mr Barnier said: “As far as the freedom of movement is concerned, I can only repeat that the four freedoms are linked together and are not negotiable.”

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Rejoining the single market would therefore mean accepting rules allowing EU citizens to move to Britain to live and work, alongside the free movement of goods, services and capital.

That would represent a major political challenge for any British government seeking to reverse Brexit, particularly given that ending freedom of movement was a central promise made by Leave campaigners.

Mr Barnier also stressed that the decision to seek EU membership again would rest entirely with Britain.

He said it would be “the choice of the UK people” for the Government to request fresh negotiations to rejoin the bloc.

However, he added that he did not want to intervene in the political debate sparked by Mr Burnham over Britain’s future relationship with Europe.

Britain voted to leave the EU in the 2016 referendum by 52% to 48%, formally departing on January 31, 2020, before completing its transition period at the end of that year.

The UK subsequently left the single market and customs union, ending automatic free movement between Britain and EU member states.

Brexit Bombshell as ‘Euro Optional for Rejoining EU’ – But There’s a Massive Catch

Britain’s future relationship with the European Union has become the centre of a major political debate after former EU chief Brexit negotiator Michel Barnier revealed that the United Kingdom could potentially rejoin the bloc without adopting the euro. However, his comments came with an important condition: Britain would have to accept freedom of movement and the fundamental rules of the European single market.

The revelation has reignited discussions about Brexit, immigration and national sovereignty, particularly after Prime Minister Andy Burnham called for an open debate about Britain’s long-term relationship with Europe. Although avoiding the euro could make EU membership more attractive to some British politicians, accepting the bloc’s other requirements could create significant political difficulties.

The issue is especially sensitive because controlling immigration and ending freedom of movement were among the central arguments used by Brexit supporters during the 2016 referendum campaign.

Britain Could Rejoin Without Adopting the Euro

Michel Barnier, who led the European Union’s Brexit negotiations with Britain, has suggested that the UK could negotiate an arrangement allowing it to return to the European Union without immediately committing to adopting the euro.

Speaking to Sky News on 5 November 2026, Barnier explained that it would be possible to begin negotiations on British membership without an obligation to participate in the single currency.

His comments are significant because new EU member states are generally required to commit to adopting the euro once they meet the necessary conditions. However, Barnier indicated that Britain could potentially negotiate a special arrangement.

The possibility could be attractive to British politicians who want closer economic relations with Europe but remain reluctant to abandon the pound sterling.

The pound has been an important symbol of British economic independence, and many people believe that retaining the national currency allows the Bank of England to maintain greater control over monetary policy.

Adopting the euro would mean transferring monetary policy responsibilities to the European Central Bank. This could significantly change how Britain manages interest rates and responds to economic challenges.

Nevertheless, Barnier’s comments suggest that the currency issue might not be the biggest obstacle if Britain eventually decided to seek EU membership again.

The Massive Catch: Britain Must Accept Freedom of Movement

The most controversial part of Barnier’s intervention concerns freedom of movement.

He made it clear that Britain could not simply select the advantages of European membership while rejecting the fundamental obligations associated with the single market.

The European single market is built around four freedoms:

• The free movement of people.

• The free movement of goods.

• The free movement of services.

• The free movement of capital.

According to Barnier, these four principles are inseparable and cannot be negotiated individually.

This means that if Britain wanted to rejoin the single market as an EU member, it would have to accept freedom of movement for European citizens.

EU nationals would once again have broader rights to live and work in Britain, while British citizens would enjoy corresponding opportunities across EU member states.

For many Brexit supporters, this would represent one of the most significant reversals of the UK’s departure from the European Union.

Immigration was a central issue in the 2016 referendum, with Leave campaigners promising that Britain would regain control over its borders and establish an independent immigration system.

Consequently, any government proposing to restore freedom of movement would face difficult questions about whether such a decision respected the outcome of the referendum.

Barnier also rejected the idea of allowing Britain to enjoy selected single-market benefits without accepting its wider rules. He argued that there could be no single market arrangement based on choosing only the advantages that suited the UK.

Andy Burnham’s Role in Reopening the Brexit Debate

The controversy follows Andy Burnham’s decision to reopen discussions about Britain’s long-term relationship with the European Union.

Burnham has argued that the country should have an honest conversation about the economic consequences of Brexit and the possibility of developing closer relations with European partners.

His position reflects concerns about the difficulties British businesses have experienced since leaving the EU, particularly in relation to trade, investment and administrative requirements.

The European Union remains an important trading partner for the United Kingdom. British manufacturers, agricultural businesses and service providers depend on access to European markets.

Supporters of closer cooperation argue that reducing trade barriers could help businesses increase exports, attract investment and improve economic productivity.

However, Burnham’s comments have attracted criticism from politicians who believe that reopening the question of EU membership risks undermining the political settlement established by Brexit.

Nigel Farage, leader of Reform UK, has consistently defended the UK’s departure from the EU and opposed proposals that could restore freedom of movement.

The latest comments from Barnier have therefore added another dimension to the political disagreement. They suggest that closer economic integration could involve obligations that British politicians may find difficult to accept.

Britain Could Lose Its Former EU Budget Rebate

Another important consideration concerns the financial consequences of rejoining the European Union.

When Britain was an EU member, it benefited from a special budget rebate negotiated by former Prime Minister Margaret Thatcher in 1984.

The arrangement reduced Britain’s financial contributions to the European budget and became one of the country’s most recognisable special privileges within the organisation.

However, former Irish prime minister Leo Varadkar has suggested that Britain would be unlikely to recover the same rebate if it applied to rejoin the EU.

This could mean that the UK would face a less favourable financial arrangement than the one it previously enjoyed.

Rejoining would potentially require substantial contributions to the European budget, depending on the terms negotiated and the economic arrangements agreed between both sides.

For British taxpayers, this raises important questions about whether the economic benefits of membership would justify the additional financial responsibilities.

The issue is particularly sensitive because Britain continues to face pressure on public finances, healthcare, housing and other essential services.

Nevertheless, supporters of rejoining argue that the economic benefits of closer integration could outweigh the costs through increased trade, investment and economic growth.

The Political Consequences for Britain

The debate over rejoining the EU highlights the continuing divisions within British politics.

Some politicians believe that Brexit has damaged the British economy and reduced the country’s influence in Europe. They argue that closer integration would provide businesses with greater certainty and create new opportunities for workers.

Others believe that Britain should preserve its independence and avoid returning to an arrangement that could limit its control over immigration, regulations and public spending.

The euro question is particularly interesting because it demonstrates that not every aspect of EU membership necessarily has to be approached in the same way. However, Barnier’s comments also show that some fundamental European principles are not open to negotiation.

For Labour, the challenge is to explain how Britain can strengthen its European relationships without contradicting its previous commitments on immigration and economic independence.

For Reform UK and other Brexit supporters, the central concern is whether closer cooperation could gradually lead to a reversal of the referendum result.

Ultimately, any application to rejoin the European Union would also require agreement from all existing member states, making the process politically and diplomatically complicated.

Conclusion

Michel Barnier’s comments have created a significant development in Britain’s Brexit debate. His suggestion that the UK could potentially rejoin the European Union without adopting the euro offers one possible route towards renewed European integration.

However, the condition attached to this possibility is substantial. Britain would have to accept freedom of movement and the fundamental rules of the single market, while potentially losing the favourable financial arrangements it previously enjoyed.

For Andy Burnham, these conditions present difficult political choices. Closer relations with Europe could offer economic opportunities, but they could also reopen disagreements over immigration, sovereignty and national independence.

In my opinion, the most important question is not simply whether Britain could return to the European Union without adopting the euro. It is whether the British public would accept the wider obligations that membership would involve.

Brexit was a historic decision that fundamentally changed Britain’s political and economic relationship with Europe. Any attempt to reverse that decision would require careful negotiations, public discussion and a clear explanation of the consequences.

The debate is therefore far from over. While the pound sterling might remain an option, the freedom-of-movement question could prove to be the biggest obstacle to Britain’s return to the European Union.