The paper describes a clinical audit of a community-based psychoanalytic psychotherapy service for young people between 12 and 25 years old. The process of managing the incorporation of the audit into the clinical sphere at the Brandon Centre is discussed. The author then focuses on the evaluation of the outcome of the psychotherapy service. The measures used are presented; the results of the data collected twenty months after the start of the project are reported, including a follow-up analysis of new patients three months after intake, based on self-report forms filled out by the young people. The tentative implications of the audit for the pattern of service delivery at the Brandon Centre, and its impact on the Centre's work, are discussed. The work presented in this paper shows that the methodologies of audit can be successfully integrated with clinical work without harming psychotherapeutic practice, and can make an important contribution to planning the direction of the clinical service.