Opinion-leaders have been described in the research literature as credible experts, capable of supporting, facilitating or advocating change and influencing health professionals to adopt innovatory, evidence-based approaches to their practice (Lomas et al., 1991; Thomson et al., 1999). However, information is lacking on the complexity of selection and training, and of the role support that is necessary to enable opinion-leaders to function effectively. This paper focuses on the experience of using opinion-leaders to implement practice change as part of a multi-faceted approach within the South Thames Evidence-based Practice project (STEP), drawing on information integrated from a cross-case analysis and the independent evaluation. Key findings are that the opinion-leader role is complex and challenging, and requires a broad balance of research, management and leadership competences to inform selection and training.
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