Objective To capture the experiences and feelings of lay educators in an asthma self-management programme to aid understanding of optimal methods of recruitment, training and retention, and to enhance their value within the programme. Methods A multi site randomised controlled equivalence trial of asthma educators and primary care practice based nurses during which the educators were asked to keep a diary of their experience. A qualitative thematic analysis of these diaries was undertaken. Results Eight lay educators supplied diaries. From these diaries emerged personal reasons for involvement in the programme, constructive comments on the training programme, a need for preparation for the realities of clinical practice and significant ongoing support and training. Conclusion Lay educators are a potential resource for giving self-management education to patients with long-term conditions such as asthma. However, there are some considerations that need to be taken into account regarding contracts, retention and continual support. Practice implications Lay educators need a flexible but comprehensive training programme, contracts, on site mentoring and support. They seem most contented when welcomed by health professionals and treated as part of the team.