The debate over the United Kingdom's relationship with the European Union has resurfaced, driven by new Prime Minister Andy Burnham, who is open to closer ties with the EU or even a formal return. The current political climate appears more favorable for such a shift, with declining support for Reform UK, the main anti-EU party, and demographic changes in the electorate. Additionally, some of the UK's constituent nations, such as Scotland and Wales, have shown increased willingness to consider rejoining the EU. However, a return to the EU remains highly hypothetical, as Burnham would have to choose between various options, from closer cooperation to full rejoining, while facing significant political, constitutional, and diplomatic challenges. Ten years after the 2016 referendum in which the British public decided, by a majority of 51.9%, that the UK would leave the European Union, Brexit remains a central issue for the Conservative Party and a major success for Reform UK, a far-right radical party that has evolved from UKIP and the Brexit Party. The Labour Party has long struggled to adopt a clear position on the issue, but Burnham, newly elected as prime minister, has openly considered the possibility of the UK's return to the EU. The question of EU membership is once again at the forefront of political discussions, fueled by the unpredictability of the US presidency and its influence on the UK's internal dynamics. Statements by Donald Trump in favor of a unified Ireland have added complexity to the situation. Within the EU, the "Made in Europe" initiative, which aims to favor European producers over external suppliers, including Chinese and British ones, has raised concerns in London about potential restrictions on UK businesses' access to the European market. Mid-September saw a summit of Welsh, Scottish, and Northern Irish leaders, highlighting the correlation between the strengthening of independence movements in these regions and the desire to return to the EU. On September 29, Burnham delivered a notable speech at his party's conference in Liverpool, stating that Brexit had done more harm than good and that closer ties with the EU should be considered. The government is reportedly testing public opinion to gauge support for rejoining the EU. Burnham, a convinced pro-European, has pushed for the UK's reintegration into the EU since becoming prime minister, despite the need for caution during his election as an MP. The international and domestic context seems favorable for such a move. The UK and the EU are planning a summit in late November to strengthen ties beyond the cautious "reset" approach of Keir Starmer, the former Labour leader. The declining popularity of Reform UK, which opposes any outreach to the EU, and Burnham's relatively high popularity, suggest a favorable environment. The French president has welcomed the possibility of the UK's return to the EU, provided it meets the EU's terms and conditions. The prospect of a return could temporarily curb the momentum of independence movements in the Celtic nations. Burnham is considering various options, from maintaining the status quo to full rejoining, depending on public opinion, economic and financial consultations, and the EU's reception. These include the Swiss model, EEA membership, or associate membership, similar to Canada's proposed status. However, Burnham is aware of the risks, including potential political backlash and constitutional challenges, such as whether to propose a new referendum or include the return in the Labour Party's 2029 election program. The EU is inclined toward a return but under specific conditions, including assurances that no new referendum will be held in the near future. The UK would also need to address the issue of its budget contributions to the EU, which could be a contentious point. Burnham's ambition to propose new ideas and challenge the status quo reflects his European aspirations, though the issue of national identity, which for some includes a complete rejection of the EU, remains delicate.