In this article, Elizabeth Cowne presents the results of research which began as an investigation into the organisational contexts in which special educational needs coordinators (SENCOs) work, and continued as an evaluation of the outreach SENCO training accredited with the London Institute of Education. Questionnaire data was collected from course members over a three-year period. Further research used focus groups in four London boroughs to explore SENCOs' views of their constant and emerging roles. Interviews with local education authority (LEA) officers from the same London boroughs enquired how SENCOs and their schools were supported. Findings confirmed earlier research showing the importance of management support. Where SENCOs had sufficient non-contact time and status, they felt efficient. Taking part in the long courses enhanced confidence, skills and knowledge. The focus groups uncovered the wide variety and expanding roles held by SENCOs: the majority requiring work with pupils, parents, teachers, teaching assistants (TAs) and outside agencies. LEA support was seen as essential in maintaining this ever-changing development.