This paper presents a clinician self-report measure developed to record the specific components of treatment used with adolescents attending a Child and Adolescent Mental Health Service (CAMHS). Using action research methodology, 18 clinicians attended up to five facilitated discussion groups during 2006 to discuss the planned implementation of a clinical trial. The clinicians helped adapt a checklist for recording treatment strategies applied in CAMHS with adolescents. The sessions were audio-taped and transcribed for thematic analysis. The final treatment recording checklist is presented. The clinicians reported the instrument was helpful for recording the content of their interventions and understanding their colleagues practice.