Vulnerable Prisoners and Suicide Prevention: Where the System Fails

The Scale of the Crisis

When I first began working on criminal justice reform through Inside Out Justice, one statistic struck me harder than most. In 2024, there were 89 self-inflicted deaths in English and Welsh prisons—a figure that had remained stubbornly consistent for years despite countless reviews, task forces, and ‘new approaches’. That’s not a number that appears on headlines often enough. It’s not sensational enough for the news cycle, yet every single one of those deaths represents a preventable tragedy, a family destroyed, a system that has fundamentally failed in its most basic duty: to keep people safe, even those we’ve locked away.

The numbers tell only part of the story. Prison suicide attempts are far more frequent, with thousands of self-harm incidents reported annually across the UK prison estate. What makes this particularly devastating is not that suicide exists in prisons—it doesn’t take a criminologist to understand that confinement, loss of autonomy, and separation from loved ones create profound psychological distress. Rather, what makes this a systemic failure is that we have clear evidence of what works, we have dedicated staff attempting to implement solutions, and yet the fundamental structures in which they operate are fundamentally broken.

The Prison Safety Scoping Project, conducted by the Ministry of Justice in 2022, identified multiple critical findings about the state of mental health support in prisons. Yet years later, many of those recommendations remain partially implemented or entirely neglected due to resource constraints, staff shortages, and competing priorities within an already stretched system. This isn’t a story about individual failure—it’s a story about structural inadequacy.

Understanding ACCT: The Current Framework

Assessment, Care in Custody and Teamwork, commonly abbreviated as ACCT, represents the framework through which UK prisons attempt to identify and support prisoners at risk of self-harm or suicide. In theory, it’s a sensible approach: screen prisoners who may be at risk, develop a care plan, review regularly, and maintain a supportive environment. The ACCT process has been refined repeatedly since its introduction, and frontline staff often demonstrate genuine commitment to using it effectively.

However, the distance between theory and practice in our prisons has become a chasm. The Prisons and Probation Ombudsman (PPO) has consistently found in their investigations of deaths in custody that whilst ACCT procedures were technically followed, they frequently failed to identify genuine risk or the care plans developed were insufficient to the scale of vulnerability present. One PPO investigation noted that a prisoner at high risk of suicide was placed in a cell visible from staff but with inadequate observation protocols, resulting in a preventable death.

The problem is multifaceted. Firstly, ACCT relies on prisoners or staff identifying vulnerability—yet prisoners experiencing profound mental health crises may not communicate clearly, and overworked prison officers struggling with staff-to-prisoner ratios may miss critical signs. Secondly, the paperwork can become exactly that: paperwork. A tick-box exercise rather than a genuine care intervention. I’ve reviewed PPO case files where the ACCT documentation was impeccable yet the prisoner received minimal actual supportive contact, demonstrating that process compliance is not equivalent to preventing harm.

The Evidence from PPO Investigations

The Prisons and Probation Ombudsman provides perhaps the most detailed and authoritative analysis of what’s going wrong. Their investigations into self-inflicted deaths are thorough, examining not only the immediate circumstances but the systemic failures that created the conditions for tragedy. Their reports consistently identify common themes: inadequate mental health assessment at reception, insufficient mental health staffing, delays in accessing treatment, and procedures that aren’t adapted to the reality of complex, multiply-marginalised prisoners.

One particularly illuminating PPO investigation examined a death in a category B prison where the deceased prisoner had been flagged as having mental health concerns on reception. Yet the mental health team was so stretched that the initial assessment didn’t occur for ten days. During that period, the prisoner’s mental state deteriorated significantly, yet ACCT procedures weren’t initiated because there was no formal mental health assessment to trigger them. This reveals a fundamental design flaw: the system that’s supposed to protect vulnerable prisoners depends on a mental health service that is chronically under-resourced and often unable to deliver timely interventions.

The PPO’s Annual Reports consistently highlight that at least 50% of self-inflicted deaths involve prisoners who had previously been on ACCT or had documented mental health vulnerability. This suggests not that ACCT is identifying the wrong people, but rather that once identified, the system isn’t providing adequate support or that the act of being on ACCT provides false reassurance that the problem is being managed. The distinction matters significantly for reform.

The Prison Mental Health Crisis

Mental health in prisons cannot be understood separately from the broader state of prison healthcare. The figures are sobering: whilst the adult prison population stands at around 80,000, approximately 50-70% of prisoners have a diagnosed mental health condition. This compares with around 20% in the general population. Yet the mental health provision within prisons has not scaled proportionally. Many prisons lack dedicated psychiatrists, relying instead on visiting consultants available only part-time or on crisis.

The NHS England Liaison and Diversion programme attempts to identify prisoners with mental health and learning needs, yet implementation is patchy across the prison estate. Waiting times for mental health appointments can stretch to months, particularly for non-crisis interventions. Meanwhile, medication supply is frequently inadequate, with prisoners being prescribed different medications than they took in the community simply because the prison pharmacy doesn’t stock the prescribed version—a change that can be destabilising for those with conditions requiring consistent pharmacological management.

Many prisons operate segregation units where prisoners are held in isolation for behaviour management or safety reasons. These units frequently house the most mentally vulnerable prisoners, yet the isolation itself is profoundly harmful for mental health. The sensory deprivation, lack of human contact, and boredom create or exacerbate psychotic symptoms and depression. Suicide attempts are significantly elevated amongst segregated prisoners, yet we continue to house the most vulnerable in conditions virtually designed to worsen their mental state.

Vulnerable Populations Within Prisons

Not all prisoners have equal risk of suicide. Research from the Samaritans, combined with my own experience in mental health support, highlights particular vulnerability markers. Young prisoners, often entering the system at 18 or younger, face significant adjustment difficulties and frequently have undiagnosed neurodivergence. Prisoners convicted of sexual offences face profound social isolation, both from other prisoners and sometimes from staff, creating psychological distress that ACCT procedures alone cannot address. Women prisoners, despite representing only 5% of the prison population, account for a disproportionate percentage of self-harm incidents and attempted suicides.

Transgender and non-binary prisoners represent another particularly vulnerable group, facing both institutional discrimination and social vulnerability from other prisoners. Many facilities lack trained staff to support prisoners experiencing gender dysphoria or transition-related distress. Foreign national prisoners, separated from family and facing deportation anxiety, frequently experience severe depression and hopelessness. Prisoners with neurodivergence—autism, ADHD, learning disabilities—often struggle in the rigidly structured prison environment and may not receive adequate reasonable adjustments or understanding of their needs.

The system treats vulnerability as an individual problem requiring individualised solutions through ACCT, but the reality is that systemic factors create the conditions where these individuals are at heightened risk. An autistic prisoner in a noisy, unpredictable environment with frequent sensory overload will be more distressed than in the community, not because of individual pathology but because the environment is fundamentally incompatible with their neurological needs. Addressing this requires structural change, not just better care planning.

Staff: The Overlooked Resource

I want to be clear about something important: the failures in prison suicide prevention are not due to prison officers or healthcare staff not caring. In my work visiting prisons and speaking with staff, I’ve encountered genuine dedication and frustration in equal measure. Officers working understaffed shifts are attempting to maintain order, provide care, identify vulnerability, and manage an environment of significant tension and conflict. They’re often doing this without adequate training in mental health, without sufficient time with each prisoner, and under immense stress themselves.

The staff shortage crisis is real and immediate. Many prisons operate significantly below their required staffing levels, with some reporting vacancy rates above 20%. This means night shifts with minimal supervision, observation duties that are rushed, and officers too exhausted to notice subtle signs of deterioration in a prisoner’s mental state. When ACCT procedures require hourly observation of a high-risk prisoner, but staff are stretched across a prison population of 1,500, that requirement becomes aspirational rather than achievable.

Staff themselves are experiencing burnout, poor mental health, and high turnover. The profession has become increasingly stressed, with pay that hasn’t kept pace with inflation and working conditions that have deteriorated. This creates a vicious cycle: stressed staff provide lower quality care, which leads to worse outcomes, which increases stress. Training in mental health is frequently inadequate, with officers often learning through experience rather than dedicated preparation.

Design Failures in Physical Environment

The physical design of prisons, particularly older Victorian establishments still operating today, creates inherent risks for vulnerable prisoners. Cells with ceilings that permit ligature attachment despite ligature-cutting measures, inadequate lighting, and views that prisoners recognise as ‘blind spots’ to observation create opportunities for self-harm that should theoretically be preventable. Some prisons have retrofitted cells with safety measures, yet many haven’t due to cost constraints and the assumption that observation will prevent harm.

Yet observation itself is problematic. Being watched continuously can feel dehumanising and is associated with increased self-harm as prisoners demonstrate distress through harm to self. The psychological impact of being on constant observation, particularly for extended periods, can worsen mental health rather than improve it. We’re attempting to prevent suicide through means that themselves cause psychological harm, suggesting that the current model is fundamentally misconceived.

Newer prison designs have begun to incorporate research-based safety features: better lighting, multiple sight lines for staff, elimination of sharp fixtures and ligature points, and dedicated mental health spaces. Yet the majority of the prison estate remains housed in older facilities where such improvements are either impossible or would require closure and rebuilding—unaffordable within current budgets.

The Role of Institutional Neglect

What strikes me most forcefully, having worked on criminal justice reform, is that we know what’s needed and we continue to fail to deliver it. The Prison Reform Trust, the Howard League for Penal Reform, and numerous academic researchers have documented with precision what changes would reduce self-inflicted deaths: adequate mental health staffing, reduced prison populations to create manageable conditions, improved staff training, better physical environment design, and genuinely therapeutic approaches rather than purely punitive ones.

Yet these changes require investment we’re not currently making. The prison system is underfunded relative to need, with budgets increasingly stretched across population management rather than meaningful rehabilitation or healthcare. Mental health services are separate from prisons and operate under different governance, creating gaps and communication failures. Probation, which could provide crucial throughcare, is fragmented and underfunded. The whole system is operating in crisis mode, with immediate survival taking precedence over prevention.

There’s also an element of institutional neglect specific to prisoners. Unlike healthcare failure in hospitals or child protection failure in schools, prison deaths provoke less public outcry and fewer systemic reviews. There’s a disengagement from the principle that we have a duty of care even to those we’ve imprisoned. This creates a permissive environment where failures can accumulate without forcing rapid change.

What the Data Actually Shows

HMPPS publishes figures on self-inflicted deaths quarterly, and a careful reading of these statistics alongside PPO investigations reveals patterns. Self-inflicted deaths spike in certain prisons with particular characteristics: those with poor mental health provision, those with high violence rates (suggesting institutional breakdown), and those with higher than average foreign national populations. During periods of staff shortage, rates increase. When new governors implement better mental health protocols, rates can decrease—demonstrating that prison suicide is not inevitable but responsive to institutional conditions.

What’s particularly important is that self-inflicted deaths are not randomly distributed. They cluster in vulnerable populations: the young, the mentally ill, those convicted of sexual offences, transgender prisoners. This clustering demonstrates that suicide in prison is not simply a function of confinement but is driven by specific risk factors that we can identify and potentially mitigate through targeted intervention.

International comparisons are instructive. Nordic countries with more rehabilitative approaches and better mental health provision report lower suicide rates in custody. This isn’t coincidence—it’s evidence that different systems produce different outcomes. The question isn’t whether we can prevent prison suicides, but whether we’re willing to invest the resources and make the systemic changes required.

The Limitations of Procedural Solutions

I want to be direct about something that’s often neglected in reform discussions: procedure alone will never solve this problem. ACCT improvements, better screening protocols, enhanced training—these all matter and should be implemented. But they operate within a system fundamentally designed for control and punishment, not care. You cannot provide genuinely therapeutic mental health support within a framework oriented toward punishment.

Consider the contradiction: prisoners are confined in conditions that would be considered abusive if applied outside the criminal justice system. They lose autonomy, privacy, control over their environment, and freedom. These conditions are profoundly harmful to mental health. ACCT procedures then attempt to identify and manage the psychological damage caused by these very conditions. It’s analogous to causing injury and then attempting to provide first aid within an environment that makes healing impossible.

For genuine change, we need to question the fundamental premises of the prison system itself. This isn’t to suggest we shouldn’t have prisons, but rather that if we’re going to confine people, we must do so in ways that don’t actively destroy their mental health. Reducing prison population, creating smaller more therapeutic units, emphasising rehabilitation over punishment, and providing genuine mental health support would require philosophical change in addition to procedural reform.

Current Reform Initiatives and Their Limitations

The Suicide and Self-Harm Prevention Strategy within HMPPS represents genuine effort to tackle the problem systematically. It includes recommendations for mental health screening, staff training, observation procedures, and environmental design. Yet its implementation has been inconsistent across the estate, hampered by resources constraints and competing priorities. Some prisons have made significant progress, whilst others have seen little change.

The Samaritans also run a listener scheme within prisons, where trained prisoners provide peer support to those in distress. This programme demonstrates real impact, with prisoners often more willing to disclose struggles to peers than to staff. Yet listener schemes can only reach those who seek them out, and they operate within resource constraints that limit their expansion. There’s also a tension inherent in expecting prisoners, many themselves traumatised, to provide mental health support to others.

Trauma-informed approaches are being piloted in some facilities, recognising that many prisoners have experienced significant trauma and that prison procedures must account for this. These approaches show promise but require staff training, culture change, and sustained commitment. They’ve been marginal additions rather than fundamental shifts in how prisons operate.

The Cost of Prevention vs. the Cost of Crisis

A particularly damning truth about the current system is economic. Preventing self-inflicted deaths through adequate mental health provision, reduced overcrowding, and better staff ratios would cost significantly more in the short term than the current underfunded approach. Yet the cost of crisis management—PPO investigations, civil litigation, staff trauma, and the immeasurable cost of preventable deaths—likely exceeds investment in prevention. We’re making the wrong economic calculation, optimising for short-term budget management rather than long-term societal benefit.

Each self-inflicted death in custody leads to a PPO investigation, often costing tens of thousands of pounds. Families frequently pursue civil claims. The reputational damage to the prison system compounds recruitment difficulties and staff morale problems. Yet none of these costs force systemic change because they’re distributed across the system rather than concentrated in a way that creates accountability.

If we were to properly fund mental health services within prisons, reduce overcrowding through a combination of sentencing reform and alternative sanctions, and invest in staff training and recruitment, the upfront cost would be substantial. But the return on investment would be measurable: fewer deaths, fewer emergency interventions, better staff retention, and a prison system capable of actually rehabilitating people rather than simply warehousing them.

My Experience Within the System

Through Inside Out Justice, I’ve spent considerable time within prisons, speaking with staff, prisoners, and families of those who’ve died. What struck me most is the absence of surprise when deaths occur. Staff expected it, families knew the risks, governors acknowledged the vulnerabilities. Yet the system continued operating in exactly the same way, as if tragedy were inevitable rather than preventable. This resignation to preventable death is perhaps the most damning indictment of the current state of the system.

I’ve also observed firsthand the difference that genuine commitment makes. Prisons where mental health is genuinely prioritised, where staff receive proper training, and where there’s institutional will to tackle the problem have demonstrably better outcomes. These successes are scattered, not systematic, and they frequently depend on the commitment of particular individuals rather than structural change. This fragmentation means that your safety in prison depends partly on which prison you’re in—a postcode lottery for mental health support.

What Meaningful Reform Requires

Genuine reform of prison suicide prevention requires four interconnected changes. First, a substantial increase in mental health resources within prisons, including dedicated psychiatrists, mental health nurses, and psychologists. This isn’t a matter of procedure but of having enough trained professionals to actually provide care. Second, reduction in prison populations to create conditions where both security and care are manageable, through sentencing reform and use of alternatives to custody for lower-risk offenders.

Third, improved integration between community mental health services and prison mental health, with genuine continuity of care for people moving between settings. Currently, mental health information is often lost when someone enters or leaves prison, requiring them to restart treatment. Fourth, cultural change within prisons to prioritise rehabilitation and care over punishment and control. This requires leadership from governors, training for all staff, and systemic support for what will be a difficult transition.

None of these changes are novel. They’ve been recommended repeatedly by independent reviewers, researchers, and reform organisations. What’s lacking is political will and sustained funding commitment. Reform requires acknowledging that we’ve created a system that’s failing in its most basic duty: keeping people safe. That acknowledgment has to come before change.

Conclusion: A System That Must Change

Fifty-four self-inflicted deaths in 2024 represents not a number but 54 families destroyed, 54 circumstances where we’ve failed to protect someone in our care. ACCT procedures, PPO investigations, and training initiatives all represent genuine attempts to prevent harm within a system that’s fundamentally broken. Yet breaking procedures will never compensate for breaking the system itself.

What I’ve learned through my work in criminal justice reform is that people within the system—governors, officers, healthcare staff—want genuine change. What they lack is adequate resources, systemic support, and cultural shift from a public that often sees prisons as punishment alone. We must acknowledge that we have a duty of care even to those we’ve imprisoned, and we must invest sufficiently to fulfil that duty. The alternative is continued preventable tragedy, masked by procedure and statistics.