Andy Burnham’s Brexit Intervention: Could a New EU Relationship Reshape Labour’s Future?

Britain’s Brexit argument has entered a new phase. The country left the European Union in 2020 after voters backed Leave in the 2016 referendum, but the question of what the UK should do next has never disappeared. In late September 2026, Prime Minister Andy Burnham put that question back into the centre of national politics by saying the government should examine a range of possible relationships with the EU, including the possibility of going much further than the current post-Brexit settlement.

That is important, but it needs to be described accurately. Burnham did not plan Britain’s withdrawal from the EU. He campaigned for Remain in 2016, and the UK’s departure was pursued by governments after the referendum. The supplied background brief for this article makes the same distinction: the current controversy concerns Burnham’s view of Britain’s future relationship with Europe, not responsibility for the original decision to leave.

The political significance is therefore not that Burnham has suddenly announced that Britain is rejoining the EU. He has not. Instead, he has argued that the country should look at the available choices, understand their economic and political costs, and decide what long-term relationship best serves Britain. That change in the range of options is enough to reopen one of the most consequential arguments in modern British politics.

What did Andy Burnham actually say?

At the Labour Party conference in Liverpool, Burnham said Brexit had done “more harm than good” and argued that Britain needs to decide on a long-term relationship with Europe. In subsequent interviews, he described several possible routes: maintaining the current arrangements, considering a customs union, looking at the single market, or “going all the way” towards full EU membership. Reuters reported that Burnham did not present rejoining as an immediate plan and instead framed the issue as a range of options to be assessed.

That distinction matters. A government can debate a future relationship without having made a formal decision to reverse Brexit. Burnham’s language has been about examining what is possible, what each option would require and what the consequences would be. Euronews reported that he said the government needed to consider what was doable and the pros and cons of each route.

His intervention nevertheless represents a major change in the political conversation. For years, the mainstream argument inside Labour was that the UK should make the existing Brexit settlement work rather than reopen membership questions. Burnham has now made a broader debate politically legitimate again, even while leaving the final choice open.

Why the original Brexit claim needs a fact-check

Online discussion can easily collapse several different arguments into one. One version suggests that Burnham was responsible for Britain leaving the EU. That is incorrect. The 2016 referendum was won by Leave, with 51.9% of votes against 48.1% for Remain, and the UK formally left the EU on 31 January 2020. Burnham supported Remain during the referendum campaign. The supplied 22-page brief specifically identifies this distinction as the central fact-check and notes that his more recent position has generally been about closer economic cooperation with Europe.

The newer debate is different. It asks whether Britain should continue with the current arrangements, remove some of the trade barriers created by Brexit, move closer to the EU’s single market, restore a customs relationship, or eventually seek membership again. Those are separate legal and political choices. Treating them as identical creates a misleading picture of what Burnham is proposing.

The five broad choices now in the debate

Burnham’s comments have brought several possible paths into the public discussion. They differ substantially in both economic impact and political cost.

Why the customs union question matters

A customs union is often presented as a middle ground because it could reduce some of the complications surrounding trade in goods without automatically restoring full EU membership. It would, however, constrain Britain’s ability to set completely independent external tariffs. That makes it both an economic and sovereignty question.

For businesses that trade heavily with continental Europe, the attraction is straightforward: fewer barriers can mean less paperwork, lower friction and more predictable supply chains. But the precise benefits would depend on the agreement negotiated with Brussels and on the rules governing standards, checks and services. It would not simply recreate Britain’s pre-Brexit trading relationship.

The supplied brief makes a similar point when it distinguishes customs union membership, single-market participation, freedom of movement and full EU membership as separate commitments.

The single market is a much bigger step

Rejoining the single market would go further. The single market is built around the movement of goods, services, capital and people, together with common rules and enforcement mechanisms. Euronews noted that such a move would carry significant political consequences, including closer regulatory alignment and the question of free movement.

That is why a single-market debate cannot be reduced to a simple argument about cheaper exports. It would also raise questions about regulation, migration, legal oversight and the degree of policy independence Britain wants. Supporters could argue that the economic benefits justify the compromises; opponents could argue that the compromises undermine the sovereignty case that drove Brexit.

Could Britain actually rejoin the EU?

In legal and political terms, rejoining would be considerably harder than changing individual parts of the current relationship. Britain would have to apply through the EU accession process and negotiate the terms of membership with the member states. It would not simply regain the exact membership conditions it had before 2020.

That is one reason Burnham has avoided presenting re-entry as an immediate government policy. His public position has been to examine the options rather than announce a completed decision. The Guardian reported that he described the possibilities as staying where Britain is, considering a customs union, considering the single market or going “all the way” to full membership.

Even if a future government wanted to pursue membership, it would face questions about public consent, the terms negotiated with Brussels and whether voters would accept the obligations involved. The supplied brief similarly notes that a full return would be politically demanding and that a durable change would require broad public support.

Why the issue matters to Labour

The political challenge for Labour is unusually delicate. Britain’s electoral geography still contains communities with very different memories of the referendum. Some voters believe Brexit damaged investment, trade and economic growth. Others believe leaving the EU restored democratic control and would resist any move that looked like a reversal.

Burnham therefore has to balance two competing pressures. Pro-European voters may see a closer relationship as an overdue correction, while voters who supported Leave may regard the same policy as a betrayal of the referendum. That tension is especially significant for Labour because the party needs support across cities, industrial regions, metropolitan areas and constituencies where Brexit remains politically important.

The supplied brief describes this as Labour’s Brexit dilemma: moving too quickly towards rejoining could alienate voters who supported Leave, while moving too slowly could frustrate voters who want closer European ties.

The economic argument behind Burnham’s intervention

Burnham’s European argument is closely connected to economic performance. In an interview with ITV News, he said the UK’s growth had been harmed by Brexit and argued that Britain would struggle to return to stronger growth while remaining too distant from its largest market. He also stressed that the government was not rushing into a particular option.

The economic debate is more complicated than a single Brexit verdict. Trade barriers, investment decisions, productivity, energy costs, global shocks and domestic policy all affect growth. But the central question is practical: does the current relationship create avoidable friction for British businesses, and would a closer relationship generate enough economic benefit to justify the political and regulatory concessions required?

For manufacturers and exporters, even relatively technical differences can matter. Customs documentation, product standards, border checks and recruitment rules can increase costs. For services, the picture is different because market access, professional recognition and regulatory alignment can be more important than customs procedures. A future UK–EU settlement would therefore affect sectors differently.

What happens to freedom of movement?

Freedom of movement is one of the most politically sensitive differences between the current UK arrangement and deeper European integration. Full single-market participation is closely associated with the EU’s wider framework for movement, while a customs union by itself would not automatically restore it.

That distinction is important because many British voters who support closer economic ties do not necessarily support restoring every feature of EU membership. Equally, some businesses and institutions argue that easier movement of workers, students and specialists would improve recruitment and collaboration.

Any future government would therefore need to explain precisely what it wants rather than relying on slogans such as “closer to Europe” or “reversing Brexit”. The more specific the proposal becomes, the clearer the trade-offs become.

Could this become a Labour leadership question?

Burnham’s comments inevitably invite speculation about Labour’s future because Europe has historically been linked to leadership contests, party identity and electoral strategy. But speculation should not be confused with an announced leadership plan.

The supplied brief notes that Burnham previously stood for the Labour leadership and that his record as Greater Manchester mayor has helped create a distinctive political profile. It also argues that his regional position gives him room to test arguments that a national government would have to turn into formal policy.

The immediate significance is therefore less about another leadership bid and more about whether Labour can develop a coherent European policy that survives internal disagreement and electoral scrutiny. If the party eventually puts a major change in the UK–EU relationship into a manifesto, voters would have the opportunity to judge that proposal directly.

What Brexit supporters are likely to argue

A serious account of the debate also has to include the case made by Brexit supporters. Their argument is that leaving the EU restored British control over laws, borders, trade policy and regulation. They can also argue that closer integration risks surrendering some of those gains without guaranteeing stronger economic performance.

Some supporters of Brexit also favour a more global trade strategy, arguing that Britain should build relationships beyond Europe rather than concentrate on restoring access to the EU. From that perspective, economic weaknesses can be attributed to domestic productivity, energy costs, taxation, investment decisions or wider global shocks rather than Brexit alone.

Those arguments cannot simply be dismissed. Any future European reset would have to answer the sovereignty question directly: what authority would Britain share, what authority would it retain, and what measurable economic or strategic benefit would result?

Why the debate could become bigger than Brexit

The deeper question is not simply whether Britain made the right decision in 2016. It is whether the country can build a stable relationship with its largest nearby trading bloc while maintaining the political independence that Brexit was designed to deliver.

That is a much harder problem than a referendum slogan. Britain has already left. The challenge now is deciding what relationship best fits its economy, security interests, labour market, regulatory choices and democratic preferences in 2026 and beyond.

Burnham’s intervention matters because it moves the conversation away from a binary Leave-versus-Remain argument and towards a menu of possible futures. That does not make the choices easier. In some ways, it makes them harder, because each option requires detailed decisions about trade, migration, regulation, law and public consent.

What happens next?

The next stage is likely to be negotiation and political testing rather than an immediate return to the EU. Burnham has indicated that the government intends to examine the options and use future UK–EU discussions to develop a longer-term approach. Reuters reported that he was looking towards a UK–EU summit later in the year as part of that conversation.

The important test will be whether broad language about “closer ties” becomes a detailed programme. A serious proposal would need to explain which institutions Britain would align with, which rules it would accept, how trade barriers would be reduced, what would happen to migration arrangements and how Parliament and voters would give consent.

Until those questions are answered, claims that Britain is definitely rejoining the EU are premature. Equally, claims that the question has been permanently settled are harder to sustain after the prime minister has publicly reopened the range of options.

Final verdict

Andy Burnham did not plan Britain’s withdrawal from the European Union. He backed Remain in 2016, and the UK left the bloc after the referendum result. The new political story is about what Britain does next.

Burnham has reopened consideration of a much wider set of relationships with Europe, from the current settlement to a customs union, single-market participation or even eventual full membership. Current reporting shows that he has not announced an immediate decision to rejoin; instead, he is arguing that the options should be examined on their merits.

That may be the most consequential part of the intervention. Brexit is no longer only a question about what Britain chose in 2016. It is becoming a question about what Britain believes its relationship with Europe should look like for the next decade. The political argument is only beginning.