A recent report by Samusocial de Paris (SSP), a health organization supporting asylum seekers, has revealed multiple injuries, including bruises and fractures, among individuals returned to France under the UK’s "one in, one out" deportation scheme. This pilot program, known as "one for one" in France, involves deporting one asylum seeker who had crossed the English Channel in a small boat in exchange for another asylum seeker being legally brought from northern France to the UK to seek asylum. The scheme, which is set to end on 1 October, has seen over 1,400 people forcibly removed to France since it began in August 2025, though some have returned to the UK by other means. SSP was commissioned by the Île-de-France regional health agency to provide medical care for asylum seekers in the first eight days after their deportation, during which they are housed in a shelter in Paris. Between 22 January and 7 June 2026, SSP documented the cases of 90 returnees, all young men in their 20s and early 30s, who had fled conflict zones such as Eritrea, Sudan, and Afghanistan. Many of these individuals had experienced torture and persecution in their home countries and had also faced modern slavery during their journeys, particularly in Libya. The report compiled by SSP has been submitted to a cross-party inquiry in the French Assembly examining the impact of the Anglo-French border agreements known as the Le Touquet agreements. The findings are based on clinical consultations with the returnees and some hospital reports from those who were sent to emergency departments. The report highlights signs of physical and psychological violence and the effects of prolonged detention in degrading conditions, which are directly linked to the implementation of the France-British agreement. It notes that the frequency of such incidents is particularly alarming. One medical report from an A&E department described a returnee in severe condition, with significant bruising, injuries consistent with restraint, and abdominal pain from repeated blows. The report also includes 13 detailed case studies showing a range of injuries that worsened due to a lack of medical care during detention in the UK. Mental health concerns, including post-traumatic stress disorder (PTSD), were also raised, with one individual requiring emergency psychiatric treatment due to disorientation, body tics, and suicidal thoughts. SSP has recommended establishing a system to collect and report allegations of mistreatment by British authorities to the UK, as well as reporting the issue to French prosecutors under Article 40 of the French code of criminal procedure. Nihal Osman, a program coordinator for Médecins Sans Frontières, which also provides health support to these returnees, described the "one in, one out" agreement as "a machine for psychological destruction," emphasizing the serious psychological impact of the documented injuries sustained in UK detention. The UK Home Office and Mitie, the company providing guards for asylum seekers, have been contacted for comment.