Despite an increasing recognition that addressing complex problems requires transdisciplinary research, the shortage of formal training for how to conduct such research is a major bottleneck to future progress. In response to this training gap, a group of early career scientists in London created the London EcoHealth Forum. Now in its second year, the Forum has matured into a small but dedicated group that cultivates thought and learning about ecosystem approaches to health. This paper discusses the key challenges faced while setting up the group and how they were overcome. The paper also outlines the main activity of the group, a seminar series devoted to a specific topic--the overconsumption of meat in London--and suggests that this format may be a useful tool for others who wish to set up a similar organization or teaching program.