A senior prisons watchdog has revealed that staff at a UK immigration detention centre wore England flags while guarding migrants—a move it said risked intimidation and undermined professional standards. The finding is part of a damning annual report that paints a stark picture of overcrowded prisons, vermin infestations, and systemic failures across the criminal justice system.
The Independent Monitoring Board (IMB) is a statutory body that monitors conditions in prisons, young offender institutions, and immigration detention centres in England and Wales. Its national annual report, published on 10 June 2026, is based on 127 local reports from individual facilities. It provides an independent, year-long overview of treatment and conditions for detainees.
“Explains the IMB's 2026 annual report on prisons and detention centres in England and Wales.”
The report highlights that at one of the Home Office's short-term holding facilities, staff wore St George's Cross flags pinned to their uniforms. The IMB noted that the flag has become “closely associated with far right and anti-migrant activists” and that wearing it risked “perceptions of bias or even intimidation among detained people, especially in the light of recent immigration protests in which flag displays were prominent.” The board concluded that the practice raised concerns about professional standards and workplace culture.
More broadly, the report describes a “consistent and deeply troubling picture” across the prison estate. Prisoners in England and Wales are held for long periods in overcrowded and unsanitary conditions, often living alongside vermin. Inmates are not fed properly and have trouble accessing medical assistance. Many have no opportunity to learn a skill or participate in education. Gangs control entire wings, roaming to collect drug debts with threats of violence. Toilets remain broken for weeks. Men, women and children spend most of their days locked up with no activities. The report warns that “failures once regarded as serious are at risk of becoming normalised.”
Specific cases include a man at HMP Garth who died in a cell fire after the alarm apparently failed to sound; a man who was warned he might lose his leg after being bitten during an infestation of spiders at HMP Bullingdon; and a spike in self-harm during hot weather at HMP Foston Hall because managers did not have funds to buy fans.
The report also provides the first overview from a watchdog of the Home Office's controversial “one-in-one-out” scheme, which forcibly returns some small boat arrivals to France in exchange for a similar number being brought legally from France to the UK. The IMB found that under this scheme, children had been detained at Gatwick immigration removal centre—even though the terms of the agreement state that lone children must not be part of it.
For UK readers, these findings are a reminder of the state of the country's detention and prison systems. The Justice Secretary Shabana Mahmood had already warned in 2024 that the criminal justice system was “close to collapse”, introducing early release schemes and diverting prisoners to police cells. The IMB's report suggests little has improved since, with the threat of the prison population exceeding the maximum of 89,800 still looming.
Q: What is the Independent Monitoring Board? The IMB is a statutory watchdog that monitors conditions in prisons, young offender institutions, and immigration detention centres in England and Wales. Its members are unpaid volunteers who visit facilities regularly and produce annual reports to Parliament.
Q: Why did wearing England flags cause concern? The IMB said the St George's Cross has become closely associated with far-right and anti-migrant activists, especially after recent immigration protests. Wearing the flag risked intimidating detained migrants and undermined professional standards.
Q: What is the one-in-one-out scheme? It is a Home Office policy that forcibly returns some small boat arrivals to France in exchange for a similar number of migrants being brought legally from France to the UK. The IMB found that children had been detained under this scheme, which the terms of the agreement forbid.
What happens next is uncertain. The Ministry of Justice has already implemented early release schemes and other measures to manage the prison population, but the IMB's report suggests deep-seated problems remain. The Home Office has not yet publicly responded to the specific findings about flag-wearing or the detention of children. Further reforms to prisons and immigration detention are likely to be debated in Parliament, but no specific dates have been announced.