Following significant changes in the legal profession since the 1980s, how do new organizational forms and actors at the edge of the law impact upon our understanding of the changing nature of the core values of mainstream legal professionalism? This methodological approach brings together a series of case studies built on original empirical research and focuses on those operating at the margins of legal professionalism in England and Wales. Also including comparative material on the US and Canada, the issues discussed are relevant for common law countries more generally and the analysis reveals the ways in which an increasingly fluid, fragmented and heterogeneous legal profession is responding to the challenges it faces in the early twenty-first century.