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

Darren Cline serves as U.S. Chief Commercial Officer since his appointment in April, 2019. Mr. Cline is a highly experienced U.S. commercial leader and senior executive with a background specializing in rare disease. He has over 25 years of commercial experience, and was previously Executive Vice President, Commercial and a member of the Executive Committee at Seattle Genetics, where he oversaw all marketing, sales, and managed markets functions.

He was directly involved in the commercial build out for the U.S. launch of Adcetris. Mr. Cline was instrumental in driving Adcetris’ continued revenue growth to over $475 million in 2018. Prior to Seattle Genetics, Mr. Cline was at Alexion Pharmaceuticals, where he was a key member of the initial commercial leadership team that prepared the company for the Soliris launch, helping to build out key sales functions that were instrumental in Soliris becoming a billion-dollar brand. Mr. Cline also held commercial leadership positions at Intermune and Amgen.

Mr. Cline received his undergraduate degree from San Diego State University and his MBA from Pepperdine University.