At GW Pharmaceuticals, we remain committed to ensuring our patients, healthcare partners and employees are supported during these challenging times. We are actively monitoring our supply chain and taking steps to help ensure continued supply of our products to patients. We will continue to monitor the COVID-19 situation and take steps to ensure that access and assistance for patients and healthcare partners remain consistent. If you wish to discuss more specific details please contact GW Pharmaceuticals via phone on +44 (0) 1223 238170 or via email at

If you are reporting an Adverse Event and / or a Product Complaint, and you receive a network busy signal (i.e. if all lines are busy or engaged) please continue to try your call throughout the day or, preferably report via the above email address.

Catherine Mackey PhD

Non-Executive Director

Dr. Mackey is an experienced corporate executive, director and advisor with over thirty years of experience in the biotechnology, pharmaceutical, and agricultural industries. In addition to her role as a member of the board of directors of GW, Dr. Mackey is Chairman of the Board of Cour Pharma, Lead Director for Poseida Therapeutics (PTSX),  and a member of the Board of Directors of Avid Bioservices (CDMO). She also serves on the Board of Directors of Rady Children’s Hospital and Rady Children’s Institute of Genomic Medicine.

Dr. Mackey previously served as Senior Vice President of Pfizer Global R&D and Director, of Pfizer’s La Jolla Laboratories, where she built Pfizer La Jolla into one of Pfizer’s main pharmaceutical research and development sites with over 1000 employees and a robust drug pipeline. Prior to that role she served as head of Strategic Alliances and also Genomic and Proteomic Sciences for Pfizer.  Dr. Mackey spent the first part of her career in agricultural biotechnology, including as Vice President of DEKALB Genetics, Inc. Dr. Mackey received her B.S. and Ph.D. degrees in microbiology and genetics from Cornell University.