In this article the authors compare two phases of an ongoing, annual online peer observation project at the Open University. Adopting a non-managerialist approach, the project aims to give teachers a renewed sense of collegiality, allowing them to take responsibility for aspects of their professional development and share practice points. While the first phase focused on a single discipline group in languages, the second brought together teachers in languages with teachers of Math, Computing, and Technology, all employing Elluminate Live as their online teaching platform. The authors comment on congruent and divergent gains emerging from the two phases.