Dr Jack Stone is an infectious disease mathematical modeller based in Population Health Sciences at the University of Bristol. His work focuses on hepatitis C virus (HCV) and HIV transmission among high-risk populations, including people who inject drugs, female sex workers and men who have sex with men.

Prof John Dillon is Professor of Hepatology and Gastroenterology and a principle investigator, in the Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee, based at Ninewells hospital, Dundee. He is also an Honorary Consultant with NHS Tayside, leading a busy general hepatology service and a research group.