The work on addiction through the ages proceeded through 4 interlinked studies:  The emergence of concepts of addiction across Europe at the national level, 1860-1980  The framing of the alcohol question at the international alcohol conferences  The role of the World Health Organisation (WHO) and its expert committees in defining addiction from the 1940s to the early twenty first century  The role of the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) in defining concepts of addiction The long view of addiction concepts at the country level over time points to continuities and changes across countries. They have also played a significant role in international organisations, the pre World War Two alcohol conferences and the World Health Organisation (WHO) after that war. The European level through the European Monitoring Centre on Drugs and Drug Addiction has also come into the picture in more recent times with discussion of a different set of concepts. Although a degree of stability has been achieved around addiction concepts, these still encapsulate a variety of meanings which translate into different treatment and policy approaches and traditions within Europe. By understanding the history of such concepts and how and why they came in and out of use, we can better understand addiction terminology and substance use policy today.