Tom Freeman is the Director of the Addiction and Mental Health Group, an interdisciplinary research group bridging Psychology, Life Sciences, Health, Management, and the Institute for Policy Research at the University of Bath. He is internationally known for his research on cannabis and cannabinoids. This includes observational studies characterising changes in cannabis products and their association with addiction and mental health outcomes, novel harm reduction strategies such as the standard THC unit (similar to the standard alcohol unit), the potential of cannabidiol to influence the effects of cannabis, and clinical trials of cannabidiol as a treatment for cannabis use disorder. He is currently funded by a UKRI Future Leaders Fellowship. In addition to this he leads the Substance Use and Addiction workpackage of the NIHR Bath Mental Health Research Group, and is deputy lead of the Drugs theme of the NIHR Policy Research Unit in Addictions. His research has generated impacts with the US National Institutes of Health Research, the European Union Drugs Agency, the National Institute of Health and Care Excellence, and the Advisory Council on the Misuse of Drugs.