The Transition movement has experienced remarkable growth in its first decade, yet there remains considerable doubt about its ability to appeal to a diverse audience. To date, there have been few studies that have explicitly examined diversity of participation in the movement. Addressing this gap in the literature, a case study is presented of Transition Town Tooting (TTT) that employed a mixed methods approach comprising semi-structured interviews, participant observation, and a quantitative survey. The results indicate that the demographic profiles of TTT participants do not represent the diversity of the Tooting population, which is exacerbated by TTT's 'passive' approach to inclusivity within the core group. Reflecting upon the implications for Transition's goal of local resilience, it is suggested that, particularly within dense urban communities, initiatives may have more potential for engaging diverse voices through a local 'brokering' role between various sub-communities.