Her research interests include sociological theories of the body, Science and Technology Studies, substance use, and ‘inventive’ research methods.
Fay has published articles in Critical Public Health, Contemporary Drug Problems, International Journal of Drug Policy, Journal of Media and Culture, and co-edited a themed collection on 'Drugged Pleasures' for the International Journal of Drug Policy. She currently has a book under contract at Routledge with the provisional title: ‘Injecting bodies in more-than-human worlds’.
Fay is on the editorial boards of the International Journal of Drug Policy and the Sociology of Health & Illness. She co-convenes the BSA Study Groups on New Materialisms and Medical Sociology (London). She is a member of the London Conference in Critical Thought (LCCT) collective, and Goldsmiths' Centre for Invention and Social Process.