Understanding the UK-France “One In, One Out” Scheme for Small Boat Arrivals

The UK Home Office has implemented a pilot program aimed at managing small boat arrivals from France. This initiative, often referred to as the “one in, one out” scheme, allows for the return of individuals who arrive in Britain via small boats back to France. The goal is to deter dangerous Channel crossings and disrupt the operations of criminal gangs. However, the program has faced scrutiny regarding its effectiveness in tracking individuals after their return and ensuring their safety.

The arrangement operates under the UK-France Agreement on the Prevention of Dangerous Journeys, which began in August 2025. Under this agreement, people arriving in the UK by small boat can be sent back to France. Once in France, they may be detained before being sent to their home countries. This process is intended to reduce the incentive for people to undertake perilous journeys across the English Channel.

How the “One In, One Out” Scheme Works

The core principle of the “one in, one out” scheme is the reciprocal transfer of individuals between the UK and France. For every person returned to France under this agreement, the UK aims to transfer a corresponding number of individuals back to the UK. This system is designed to create a balanced flow of people, theoretically discouraging further irregular crossings.

By June 30, 2026, authorities had returned 1,087 people to France and transferred 1,117 people to the UK under the scheme. This indicates a slight imbalance in the numbers transferred in each direction during the pilot period. The scheme is a component of a broader effort to manage border security and combat illegal immigration.

Challenges in Tracking Returnees

A significant challenge highlighted by the program is the difficulty in tracking individuals once they have been returned to France. The Home Office has acknowledged that approximately 50 individuals returned to France under the scheme were later detained again after re-entering Britain. Asylum seekers and non-governmental organizations (NGOs) have suggested that the actual number of returnees making their way back to the UK could be around 200.

These figures suggest that a portion of those returned to France become unaccounted for. Potential outcomes for these individuals include re-entry into Britain, becoming lost or uncontactable in France, finding informal accommodation, or traveling onward to other destinations. The lack of complete tracking raises concerns about the welfare and whereabouts of these individuals.

The Scope of the Pilot Program

The “one in, one out” pilot is scheduled to continue until October 1, 2026. While the number of returns under the scheme is significant, it represents a fraction of the total number of people crossing the English Channel by small boat. Official statistics show that between January 1 and September 7, 2026, approximately 17,281 people crossed the Channel.

The scheme is part of a larger strategy to increase removals. In the year ending June 2026, 3,310 people arriving by small boat were returned, a 35% increase compared to the previous year. However, the share of small-boat arrivals returned to France under the specific pilot scheme is roughly 4% of the overall small-boat arrivals.

French Involvement and Cooperation

France plays a crucial role in the operation of the “one in, one out” scheme. French authorities are responsible for handling individuals returned from Britain. By August 21, 2026, 119 people had been detained in France under the trial. Of these, 76 remained in detention, 32 had been released, and 40 had been deported from France.

Beyond receiving returnees, French police are also actively working to prevent departures from its coast. During the initial months of the agreement, French-funded officers prevented 185 boat crossings and stopped an estimated 4,300 migrants from reaching British shores. This cooperation has been strengthened, with France agreeing to send additional officers to its western beaches to bolster border security efforts.

Broader Political and Safeguarding Concerns

The “one in, one out” scheme operates within a wider political context concerning immigration and border control. UK Home Secretary Shabana Mahmood has stated that the government is committed to restoring order at the border and targeting criminal gangs. The government points to a reduction in small-boat crossings in June, July, and August 2026 as evidence of their efforts bearing fruit.

However, scrutiny of the program extends beyond the direct returns. There are ongoing concerns about child safeguarding, particularly following reports of children going missing from asylum hotels in the UK. The Joint Committee on Human Rights noted that 472 children went missing from asylum hotels in 2023, with 40 remaining unaccounted for. These broader safeguarding issues cast a shadow over the government’s approach to vulnerable individuals within the immigration system.

The effectiveness and ethical implications of the “one in, one out” scheme will continue to be evaluated as the pilot progresses. The ability to account for individuals after their transfer and the overall impact on dangerous Channel crossings remain key areas of focus.

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