Mat Southwell runs a volunteer peer-to-peer needle and syringe programme with his peers in Bath UK. He delivers community-led technical support to those pioneering harm reduction with people who use and inject drugs around the world through his community company Coact.

Magdalena Harris is a Professor of Inclusion Health Sociology at the London School of Hygiene and Tropical Medicine. She currently leads two NIHR-funded projects aiming to improve harm reduction provision and health outcomes for people who use heroin and crack cocaine in the UK. Her work is informed by her lived experience of high intensity drug use and associated social stigma.

Tetiana Deshko, an HIV/AIDS expert since 2001, leads national and international programs with the Alliance for Public Health in Ukraine. Her work has reduced new HIV infections among key populations. She also initiated a Hepatitis C treatment program for PWID and holds an MBA and PhD, managing projects in Europe, Asia, and Africa.