Slides from a symposium exploring the role and experiences of librarians and learning developers in building communities of practice for researchers.Uses two case studies from De Montfort University (Leicester, UK) onexperiences of building a virtual CoP (wiki-based) and a face-to-face writing group. Symposium was led by Katie Fraser (now University of Leicester), and content contributed by Melanie Petch and Jo Webb (both De Montfort University).