Offenders with mental health issues
Major investigation and public protection — Authorised Professional Practice
Summary
This APP topic provides guidance for managing sex offenders and violent offenders who are known or believed to be experiencing mental health issues. It underscores the importance of a multi-agency approach, involving health services and social care, to assess and manage the risks posed by these individuals. The guidance addresses various aspects, including supportive measures, conditional discharge as per the Mental Health Act 1983, and protocols for handling suicide risks among these offenders. Officers are advised to collaborate with mental health professionals and ensure that healthcare access does not replace legal accountability. It includes considerations for the management of Dangerous and Severe Personality Disorder (DSPD) offenders and follows best practices for intervention and support.
Key principles
- 1Engage with health services and social care for risk assessment.
- 2Healthcare access should complement, not replace, legal responsibility.
- 3Multi-agency coordination is essential for effective management.
- 4Consider suicide risk in all decision-making processes.
- 5Follow clear protocols for the management of dangerous offenders.
Defined terms
- Mental Health Act 1983
- Legislation that governs the admission of individuals to hospital against their will, their rights while detained, and their aftercare.
- Care Programme Approach (CPA)
- A framework for the assessment and management of individuals with complex mental health needs.
- Dangerous and Severe Personality Disorder (DSPD) programme
- A specialized program for offenders with severe personality disorders assessing entry criteria and management.
- Potentially Dangerous Persons (PDPs)
- Individuals who pose a significant risk of harm to themselves or others due to severe mental health issues.
Full guidance
Responding to public protection and major investigation issues, for example, child abuse, knife crime and sexual offences
This page is from APP, the official source of professional practice for policing.
This module provides management of sexual offenders and violent offenders (MOSOVO) officers with guidance for dealing with an offender who is known or is believed to be experiencing a mental illness. It includes advice on a multi-agency approach to managing the offender in the community including seeking and providing information to inform risk, supportive measures, hospital orders with or without restrictions and managing the risk of suicide.
Offenders experiencing mental ill health should be given access to appropriate healthcare. Healthcare, however, should not be viewed by the police as an alternative to charging and prosecuting offenders. Where offenders or potentially dangerous persons (PDPs) are known or believed to have a mental illness, contact should be established with health, adult and children’s social care services to ensure coordinated action.
Management of PDPs experiencing mental ill health should, wherever possible, take place within the **Care Programme Approach**(opens an external website in the same tab) (CPA). The CPA involves risk assessment and allows for a multi-agency approach which includes the involvement of criminal justice agencies, where appropriate. The CPA coordinator may be a nurse, social worker or occupational therapist. In some cases the risk posed by the individual requires police action in addition to that of other agencies.
The NHS also provides useful information on the CPA.
For further information go to:
Conditionally discharged restricted patients under the Mental Health Act 1983
Dangerous offenders who are experiencing a mental health disorder may be sentenced using a hospital order instead of a prison sentence. This requires their detention in hospital for treatment. They can subsequently be discharged conditionally into the community, subject to recall to hospital by the Secretary of State for Justice.
The Mental Health Casework Section of His Majesty’s Prison and Probation Service (HMPPS) is responsible for overseeing the management of these offenders. The Mental Health casework section (MHCS) applies the delegated powers of the secretary of state under section 41 of the Mental Health Act 1983 (MHA). MHCS only oversees those offenders on a section 37 or 41 and there may be MAPPA offenders who have received solely a section 37 order. Some patients are given escorted or unescorted leave as part of their treatment plan and to support their recovery. As such, MOSOVO officers will need to be mindful that such requests may come to a local MAPPA area to agree or endorse.
Conditionally discharged patients are usually supervised by both a psychiatrist and a social worker. It is the responsibility of the Secretary of State to be satisfied that the danger to the patient or to others is being minimised by effective supervision and appropriate community support. If appropriate, the Secretary of State can recall the patient to hospital. Social workers are responsible for submitting updates to the Ministry of Justice, reporting on compliance with conditions, current mental state and the current level of risk. Sentenced prisoners can be transferred to hospital under section 47 – the MHCS applies the delegated powers of the Secretary of State under section 49 in the same way as section 41 applies to those with a section 37 hospital order.
The MHA 1983 governs the admission of people to hospital against their will, their rights while detained, their discharge from hospital and their aftercare. While the police service cannot apply for this kind of detention, staff should be aware of its existence and applicability. People are normally detained in this way in the interests of their own health and safety or because other people may be at risk from the person’s behaviour.
For details of the entry criteria, referral and assessment processes for the Dangerous and Severe Personality Disorder (DSPD) programme, go to **Probation Circular (2008) Managing High Risk of Serious Harm Offenders with Severe Personality Disorder PC21/2008** (opens an external website in the same tab) .
MOSOVO offenders or PDPs experiencing mental health issues may present a high risk of suicide.
APP on **suicide and bereavement response** and **detainee care** provides officers and staff with useful advice.
The possibility of suicide should be included in risk management plans. Go to **College of Policing (June 2019) Operational Advice: Managing the risk of suicide for persons under investigation for online child sexual abuse and exploitation.**
In addition to the content of APP, the following issues should be considered when managing the risk of suicide by MOSOVO offenders or PDPs.
Any arrest or other police intervention should take place in private, if possible, out of sight or earshot of family, friends, neighbours, colleagues and any member of the public. * If any visitors to the police station ask to speak to the suspect, they should not be informed that the person is in custody without the written authority of the suspect. The individual’s authority should be recorded on the custody record. * Follow-up visits to the police station by the individual, or contact with them, should be used as an opportunity to check their welfare and offer them specialist support services, and this should be documented. * Any decisions relating to sharing information about the individual should consider the risk of suicide as one factor in the process of defensible decision making.
Information and support for suspects of child sexual abuse (CSA) can be found on this leaflet:
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Read the full APP guidanceSource: College of Policing — Authorised Professional Practice · Crown copyright, licensed under Open Government Licence v3.0. Summary fetched 2026-06-27.