This paper uses self-study to analyse the development of a generative, research-based approach to mentoring initial teacher training students in a Training School/university partnership and its contribution to redefining teacher education practice. It focuses on the ontological values and co-learning of the authors as they work collaboratively with mentors to develop a democratic form of social practice and relations. The use of video to record the teaching and situated learning of mentors and trainees is explored as are the qualities and conditions which helped foster the shift in power relations between participants as they engaged in reflective dialogue and inquiry. Issues of sustainability and embedding such practices are addressed as is the contribution of practitioner-research accounts to the professional knowledge of other teacher educators, teachers and trainees.