A landmark judgment handed down at the High Court in London on 15 December ruled that key Home Office safeguards designed to protect vulnerable migrants in immigration detention have been failing for years, breaching Article 3 of the European Convention on Human Rights.
Mrs Justice Jefford found that the ‘Rule 35’ mechanism—which requires medical staff to alert officials when detainees show signs of torture, trafficking or suicidal ideation—was routinely ignored or so delayed that individuals at acute risk remained locked up. The court heard evidence from two former detainees from Egypt and Bangladesh, held at Brook House near Gatwick, who were never re-assessed despite documented psychosis, self-harm and multiple warnings from clinicians.
![High Court says Home Office systems unlawfully expose vulnerable migrants to inhuman treatment]()
Brook House has been under scrutiny since a 2017 BBC Panorama investigation exposed staff abuse. A subsequent statutory inquiry issued 30 recommendations in September 2024; yet the High Court noted that only 25 have been fully implemented and systemic weaknesses persist. In particular, Rule 35 reports are not properly linked to suicide-prevention ‘ACDT’ reviews, meaning frontline staff often work with incomplete information.
The ruling could have wide-ranging consequences. More than 22,000 people passed through UK detention centres last year, and any detainee whose vulnerability was overlooked may now have grounds to challenge the lawfulness of their detention or seek damages. Human-rights NGOs urged the Home Office to introduce an automatic judicial review trigger after any Rule 35 finding and to expand the use of community-based alternatives to detention.
For employers and mobility teams, the judgment underscores growing litigation risk around prolonged detention of sponsored workers whose visas have lapsed. Companies have been advised to tighten tracking of visa expiries and to ensure that support is offered swiftly when staff are detained, including access to legal counsel and mental-health services.
Mrs Justice Jefford found that the ‘Rule 35’ mechanism—which requires medical staff to alert officials when detainees show signs of torture, trafficking or suicidal ideation—was routinely ignored or so delayed that individuals at acute risk remained locked up. The court heard evidence from two former detainees from Egypt and Bangladesh, held at Brook House near Gatwick, who were never re-assessed despite documented psychosis, self-harm and multiple warnings from clinicians.
Brook House has been under scrutiny since a 2017 BBC Panorama investigation exposed staff abuse. A subsequent statutory inquiry issued 30 recommendations in September 2024; yet the High Court noted that only 25 have been fully implemented and systemic weaknesses persist. In particular, Rule 35 reports are not properly linked to suicide-prevention ‘ACDT’ reviews, meaning frontline staff often work with incomplete information.
The ruling could have wide-ranging consequences. More than 22,000 people passed through UK detention centres last year, and any detainee whose vulnerability was overlooked may now have grounds to challenge the lawfulness of their detention or seek damages. Human-rights NGOs urged the Home Office to introduce an automatic judicial review trigger after any Rule 35 finding and to expand the use of community-based alternatives to detention.
For employers and mobility teams, the judgment underscores growing litigation risk around prolonged detention of sponsored workers whose visas have lapsed. Companies have been advised to tighten tracking of visa expiries and to ensure that support is offered swiftly when staff are detained, including access to legal counsel and mental-health services.
Source: The Guardian
