Our research spans multiple domains, including physical activity, healthy eating, community‐based programmes, sexual health, and chronic disease management, and covers different settings (schools, communities, online platforms, peer networks).

For example, we examined how a community‐based physical activity programme helped to foster social cohesion via changes in network ties over time (temporal network analysis).

In adolescent physical activity, studies using trained peer “influence agents” were deployed, though results were mixed and highlighted important lessons about recruitment, engagement, and measurement.

Some pilot feasibility studies explored online social network interventions in children or young people, mapping both behaviour change and network engagement.

By covering such diversity, we aim to uncover mechanisms that generalise across contexts, and also pinpoint context‐sensitive features (e.g., age, population, platform, network type).