Ben Sessa is a medical doctor and consultant psychiatrist. He is senior research fellow at the University of Bristol, Cardiff University, and Imperial College London, where he is currently conducting the UK’s first clinical studies with MDMA-assisted therapy for the treatment of PTSD and alcohol dependence. Dr. Sessa is outspoken on lobbying for change in the current system by which drugs are classified, believing a more progressive policy of regulation would reduce the harms of recreational drug use and provide increased opportunities for clinical psychedelic research. He is a cofounder and director of the UK’s Breaking Convention conference.