We also realized in-depth interviews with experts and various stakeholders to understand the spatial and organizational structure of supply in the illegal trade: how smuggled and counterfeit goods reach the “market”, how and where they are sold and finally what types of networks are used for the distribution of these illegal goods. In-depth interviews with business associations, law enforcement officers, lawyers, retailers, etc. allowed us to analyze production, marketing and the organization of illegal trade networks. The in-depth interviews started on 14 November 2019 and were completed on 23 February 2020. Overall, 228 interviews were conducted in 22 provinces distributed across 12 NUTS 1 regions.