Background: Cool Teens is a computerised cognitive behavioural therapy (CCBT) program designed for anxious adolescents that has demonstrated efficacy in a university clinic. Aims: The effectiveness of this program in real world settings has not been evaluated. This study aimed to examine the benefits and acceptability of using CCBT in a community mental health setting. Method: An adolescent girl (aged 16) with anxiety completed CCBT as a first step to therapy in a community mental health setting. She completed the program on her home computer supported by brief therapist phone calls. Further face-to-face sessions were provided post-CCBT and focused on practicing the skills learnt in CCBT. Self-reported adolescent anxiety was measured pre-treatment, post-CCBT, post-face-to-face therapy, and at 3 month follow up. The participant and therapist also provided feedback on the CCBT program and its usefulness at post-treatment. Results: Changes in self-reported anxiety scores over time were observed for CCBT, with further reductions after face-to-face therapy. Both the adolescent and therapist reported positive benefits to using CCBT as the first step in treatment, and identified few barriers. Conclusions: CCBT is a promising first step in treatment that can be utilised in community mental health settings with the likely benefits of increased user satisfaction (due to decreasing in therapy waiting times) and reduced therapist time per client.