This article evaluates an assertive outreach team which aimed to help support people with a learning disability who displayed challenging behaviour in their own environment. The service was evaluated using Maxwell's Multi-dimensional Quality Evaluation Model (Maxwell 1984), which recognises that different stakeholders in a service are likely to focus on different indices of quality including effectiveness, efficiency, economy, equity, access to services, appropriateness and social acceptability. The main strengths of the team were staff skills and professionalism, whereas the most frequently cited weaknesses centred around issues of liaison, communication and the role and remit of the team.