Gail Gilchrist is a Senior Lecturer in the Addictions at the National Addiction Centre, Institute of Psychiatry, Psychology & Neuroscience (IoPPN). She has worked in addiction research since 1995 in the UK (Argyll and Clyde Drug Action Team, Greater Glasgow NHS Board, University of Greenwich), Australia (University of Melbourne) and Spain (Institut Hospital del Mar d’Investigacions Mèdiques, Barcelona). Gail is a mixed methods researcher who has undertaken research on substance use and its relationship with psychiatric disorders, intimate partner violence and blood borne viruses among vulnerable groups including females, those involved in prostitution and homeless people. In addition, she has conducted research on treatment access for substance users in Europe. More recently, she has been developing and testing psychosocial interventions for substance users experiencing depression, intimate partner violence or who are at risk of hepatitis C, with partners from the UK, Europe and the US. Gail is co-Editor of the journal Advances in Dual Diagnosis and is a peer reviewer for over 20 journals. She is also an Adviser for the Research Development Service London.