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There is a proportion of psychiatric service users whose needs are not met by existing models of care. This can lead to a reliance on acute and crisis services. These service users may be considered high intensity users (HIUs). The purpose of this research is to evaluate the Crisis Plus model, an intervention designed to better support HIUs in the community and reduce dependency on acute and crisis services.

Forty-seven HIUs were involved in Crisis Plus. The core intervention of Crisis Plus was an Anticipatory Management Plan (AMP), produced in collaboration with service users, their families and their care coordinators. AMPs were shared with relevant services and attached to electronic patient notes to ensure a uniform, psychologically informed approach to care.

HIU service use was compared pre and post-AMP. On average, number of inpatient admissions, number of days spent on the ward, accepted psychiatric liaison referrals and accepted home treatment team (HTT) referrals decreased significantly.

Crisis Plus has taken a collaborative, proactive approach to engage HIUs, their families and the services that care for them. Crisis interventions that emphasise collaborative working and service user agency are key.

The provision of dedicated psychological support to HIUs and their professional and personal network is crucial to reduce reliance on acute and crisis care. Crisis Plus is unique in that it instigates co-production and active consultation with HIUs and services to improve clinical outcomes, in addition to reducing NHS expenditure.

Managing the risk posed by violent and sexual offenders who have a personality disorder is a key priority in forensic mental health services. An important element of service delivery is to maintain client engagement with the care team in order to promote positive change. Service‐user involvement in multi‐method evaluations has been shown to increase involvement and ownership of services and thereby increase engagement. This study presents the findings from a qualitative service user evaluation of a pilot project known as the Forensic Intensive Psychological Treatment Service (FIPTS). The main findings highlight the importance of a good therapeutic relationship and good communication with the care team, how therapy work offers insight and understanding into behaviour, encouraging service users to make positive changes, and how returning to work gives hope, independence and confidence. Service users generally feel supported and able to approach the team with any concerns of escalating risk and also highlight certain areas of improvement.

This paper aims to explore a structural optimization method to achieve the lightweight design of an aviation control stick part manufactured by laser powder bed fusion (LPBF) additive manufacturing (AM). The utilization of LPBF for the fabrication of the part provides great freedom to its structure optimization, further reduces its weight and improves its portability.

The stress distribution of the model was analyzed by finite element analysis. The material distribution path of the model was optimized through topology optimization. The structure and size of the parts were designed by applying honeycomb structures for weight reduction. The lightweight designed control stick part model was printed by LPBF using AlSi10Mg.

The weight of the control stick model was reduced by 32.64% through the optimization method using honeycomb structures with various geometries. The similar stress concentrations of the control stick model indicate that weight reduction has negligible effect on its mechanical strength. The maximum stress of the lightweight designed model under loading is 230.85 MPa, which is 61.81% larger than that of the original model. The lightweight control stick part manufactured by LPBF has good printability and service performance.

A structural optimization method integrating topology, shape and size optimization was proposed for a lightweight AlSi10Mg control stick printed by LPBF. The effectiveness of the optimization method, the printability of the lightweight model and the service performance of LPBF-printed AlSi10Mg control stick was verified, which provided practical references for the lightweight design of AM.