Objective: The aim of this paper is to describe the establishment of an integrated young person's mental health service and the findings of a qualitative evaluation conducted 2 years after its establishment. Method: A qualitative evaluation of the service was undertaken using a semi-structured interview, a service satisfaction survey and partnership analysis tool. Results: The major problems encountered in establishing the service were insufficient recognition of the cultural challenges in working together, difficulty in recruiting general practitioners, establishing a youth friendly environment and maintaining the quality of the relationship between partners. Conclusion: Despite almost 3 years of preparation, many important aspects of change management were underestimated or inadequately attended to.