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.

Darren Cline

U.S. Chief Commercial Officer

“There’s nothing quite like knowing that the work we do is making a difference for patients and their families.”

Darren Cline is GW’s U.S. chief commercial officer, a role he has held since joining the company in April 2019. He has over 25 years of commercial experience, particularly in rare disease.

As U.S. commercial leader, Darren is responsible for product sales, marketing, market access and account management, plus medical affairs, patient advocacy and scientific communication.

Prior to GW, Darren was executive vice president of commercial and a member of the executive committee at Seagen, where he oversaw all marketing, sales and managed markets functions, and contributed to the U.S. commercial launch of Adcetris for Hodgkin lymphoma and systemic anaplastic large cell lymphoma. Previously, he led U.S. sales at Alexion Pharmaceuticals, where he built sales functions to launch Soliris, a first-in-class terminal complement inhibitor, and help it become a billion-dollar brand. Darren also held commercial and marketing leadership roles at Intermune and Amgen. He started his career in pharmaceutical sales at Schering-Plough.
Darren earned a bachelor’s degree from San Diego State University, San Diego, California, and his MBA from Pepperdine University, Malibu, California.