Assertive outreach primary aims to provide specialist services for people disengaged from traditional approaches of mental health services, but very little attention has been paid to how such services can develop. The Practice Based Evidence consultancy engaged with seven assertive outreach teams in England to implement an approach to practice development that focuses on team-working and adopting a specific strengths approach to its model of practice. This article summarises some of the findings and puts forward strengths-based recommendations to develop assertive outreach practice.