Dr. Jason Lowther

This is the last (for now) of our series of blogs on recent evaluations of local public services – if you have published an evaluation you think may be of interest to Inlogov readers, please send me a link to it ([email protected]).

Much of the evaluation literature on violence reduction has focused on system-wide approaches such as Violence Reduction Units. The London Vanguards independent evaluation offers a close look at one defined service model designed to support children and young people affected by violence through integrated, community-based provision.

The London Vanguards programme, delivered across 12 boroughs between 2022 and 2025, brought together health, community and psychological support into a single, coordinated offer for young people at risk of, or affected by, violence. The independent evaluation, led by the Anna Freud Centre, used a mixed-methods realist design, combining service data with interviews and focus groups involving young people, families and practitioners. The aim was not only to assess outcomes, but to understand how and why the model worked in practice.

A holistic, multi-systems approach

At the core of the Vanguards model is a holistic understanding of violence risk. Rather than focusing narrowly on offending behaviour, the programme recognises that many young people experience multiple, overlapping adversities – including mental health needs, family instability, educational exclusion and unmet developmental needs.

The evaluation shows that this approach enabled services to identify needs that had often gone unrecognised elsewhere, particularly around neurodevelopmental conditions, speech and language difficulties and mental health. These underlying issues frequently shape both vulnerability to violence and the ability to engage with support.

The model therefore combined psychological support, practical help and wider system navigation, rather than relying on a single intervention. In doing so, it reflects a shift from treating violence as an isolated problem to addressing it as part of a wider set of life circumstances.

Outcomes: improvements across multiple domains

The evaluation presents a broadly positive picture of outcomes, although with important caveats around data completeness.

Around 1,500 children and young people were supported over the life of the programme. Among those with available data, there were reported improvements across several domains:

• mental health improved for around 47 per cent of participants
• education and accommodation outcomes improved for around one third
• reductions in offending and high-risk behaviours were reported for a significant minority

Qualitative evidence reinforces these findings. Young people, parents and practitioners consistently described increases in confidence, wellbeing and sense of agency, as well as improvements in family relationships and engagement with education or employment.

Importantly, the evaluation suggests that these changes were not always short-lived. Many participants maintained positive outcomes over time, which was attributed to the longer-term, relationship-based nature of the support.

What drives change: relationships, persistence and coordination

Among the most valuable insights from the evaluation are those examining how change was achieved.

First, trusted relationships between practitioners and young people emerge as a central mechanism. The model’s flexible and persistent approach allowed practitioners to engage individuals who might otherwise disengage from services. This sustained engagement appears to be critical in supporting progress.  The importance of this relational approach to public services is increasingly recognised.

Second, multi-agency coordination proved essential. Although establishing partnerships was initially challenging, over time services became more aligned, enabling more coherent and responsive support. This coordination allowed practitioners to address needs across different domains without requiring young people to navigate multiple disconnected systems.

Third, the programme’s holistic design enabled it to respond to changing needs. Rather than fixed pathways, support could adapt as circumstances evolved, which is particularly important given the instability many participants experienced.

The data challenge: promising evidence, incomplete picture

As with many complex service evaluations, the report highlights limitations in the evidence base. Missing data rates are high across several outcome measures, and there is no control group for comparison. This makes it difficult to draw definitive conclusions about impact.

What does this mean for local authorities?

The London Vanguards evaluation suggests several lessons for local government and partners.

First, violence reduction is inseparable from wider needs. Effective responses must address mental health, development, family context and structural disadvantage alongside risk behaviours. Single-issue interventions are unlikely to be sufficient.

Second, relationship-based practice is central. The strongest evidence of change comes from sustained, trust-based engagement between practitioners and young people. This has implications for workforce stability, caseloads and commissioning approaches.

Third, integration works, but takes time. The evaluation shows that multi-agency coordination improved over time, but required sustained effort to establish.

Fourth, flexibility is a strength. The ability to adapt support to individual needs was a key feature of the model. Highly standardised approaches may struggle to achieve similar outcomes with complex populations.

Finally, the evaluation highlights the importance of taking a long-term view. Improvements were gradual, interconnected and not always immediately visible. This may challenge some performance frameworks but better reflects the reality of supporting young people affected by violence.

Taken together, the evidence from the London Vanguards suggests that what works in this area is not a single intervention, but a way of working: holistic, relationship-based and coordinated across services. The challenge for government and local authorities is creating the conditions to sustain this approach over time.