This guidance makes recommendations on individual-level interventions aimed at changing health-damaging behaviours among people aged 16 or over. It includes a range of approaches, from single interventions delivered as the opportunity arises to planned, high-intensity interventions that may take place over a number of sessions. The recommendations are inter-linked and should be implemented together. They cover: policy and strategy, commissioning, planning, delivery, training and evaluation of individual-level behaviour change interventions. They also cover behaviour change techniques, the maintenance of change and organisational and national support.