The Cognitive Behavioural Therapy Group Program at Central Coast Mental Health Specialty Clinics includes treatments for generalised anxiety disorder, panic disorder and depression. This study provides empirical validation for hypotheses developed in clinical controlled studies; that is, that cognitive-behaviour therapy provided benefits in the treatment of anxiety and depression in a service setting. This would be reflected in decreases in the symptoms of anxiety and depression and increased self-esteem. Participants (N = 139) were referred to Specialty Clinics, Central Coast Mental Health Services for treatment for depression and/or anxiety in CBT groups. They were tested on the BDI, STAI and the SERS at three time points, prior to entering the group, at termination of the group and at 3-month follow-up. Depression and anxiety symptoms decreased and self-esteem increased between pre- and post-group and the trends continued to 3-month follow-up.