The border agreement between France and the United Kingdom, aimed at reducing the number of migrants arriving in the UK by small boats, has officially come to an end. Signed in the summer of 2025 by then British prime minister Keir Starmer and French president Emmanuel Macron, the agreement was known as "one in, one out," meaning that for every migrant who entered the UK irregularly, one would be returned to France. The agreement was renewed in June but will now expire on Thursday, October 1st. Under the terms of the agreement, France was responsible for returning migrants who had crossed the English Channel illegally back to the UK, while the UK was to return those who had arrived in France irregularly. This policy was intended to manage the flow of migrants between the two countries and reduce the number of dangerous crossings. However, the agreement has been a point of contention, with critics arguing that it placed a disproportionate burden on France. France has expressed a desire to "Europeanize" the issue, suggesting that the problem of irregular migration should be addressed at a broader European level rather than being handled bilaterally between France and the UK. However, no clear plan or specific actions have been outlined to implement this approach. The end of the agreement may lead to increased pressure on both countries to find new solutions to the ongoing migration challenge. The termination of the agreement comes at a time when migration remains a significant political and social issue in both France and the UK. With no immediate replacement in place, the situation could lead to a rise in irregular crossings and further strain on border control systems. Both countries will now need to work together to address the issue without the framework of the previous agreement.