This report compiles nine original contributions concerning grassroots strategies to preserve and improve marketplaces. Each contribution analyses strategies developed by market trader communities in Bolivia, Mexico, Brazil, Argentina, Ecuador, Bulgaria, Spain, and the UK to foreground the critical work trader organisations have done to protect and enhance marketplaces. These contributions draw on original research conducted by their authors in recent years. The report has been devised as a knowledge exchange and dissemination output of the ESRC postdoctoral project Popular infrastructural politics: Connecting grassroots knowledge and practice on marketplace governance (ES/W005476/1). This output responds to the stakeholders' expressed interest that the project provides them with useful materials...