Abstract Portsmouth Wellbeing Service's use of Patient Activation Measure (PAM) as a tool to enabling effective support to change behaviour. PAM Survey is a reliable and validated tool that measures the knowledge, skills and confidence that someone has to manage their own health. Highly activated people are more likely to engage in healthier behaviours, have clinical markers in a normal range, attend screenings and regular check-ups and manage their condition. If someone's health activation increases this can result in improved self-care behaviours, better health outcomes, and lower utilisation of healthcare services. Clients complete an initial PAM at their first appointment, the results will initiate a conversation identifying barriers, solutions to change and ensuring clients are at the centre of decision making, an approach called 'coaching by activation'. This is repeated 4 weekly whilst clients are engaging in support.Since July 2017 the Wellbeing Service has completed 1892 initial PAM screenings. 566 clients have been rescreened, a 29.9% rescreen rate. Clients initially identified as:PAM level 1 - 94.5% improvement in activation score. PAM level 2 - 71% improvement in activation score. PAM level 3 - 68.5% increase in activation score. PAM level 4 - 34% increase in activation score. Using the PAM survey to identify knowledge, skills and confidence an individual has enables a 'Coach by Activation' approach to support behaviour change at a level the client can achieve. A significant majority of Wellbeing Service client's activation level has increased; demonstrating the effectiveness of the PAM approach in supporting behaviour change. External funding details Not applicable