Appointment of Adviser

16 May 2006

GW Pharmaceuticals plc (AIM: GWP) is today pleased to announce the appointment of Investec Bank (UK) Limited as Nominated Adviser and Broker to the Company with immediate effect.

Enquiries:
GW Pharmaceuticals plc Today: +44 (0)20 7831 3113
Dr Geoffrey Guy, Executive Chairman

Justin Gover, Managing Director

Investec Tel: +44 (0)20 7597 5000

Michael Lacey-Solymar

Patrick Robb

Financial Dynamics Tel: +44 (0)20 7831 3113

David Yates

Sarah MacLeod

Notes to Editors

About GW Pharmaceuticals

GW was founded in 1998 and listed on the AiM, a market of the London Stock Exchange in June 2001. Operating under license from the UK Home Office, the company is developing cannabis-derived pharmaceutical products for patients with multiple sclerosis, neuropathic pain, cancer pain, spinal cord injury, rheumatoid arthritis, and other severe medical conditions.

GW has assembled a team of over 100 scientists with extensive experience in developing both plant-based prescription pharmaceutical products and medicines containing controlled substances. GW is dedicated to developing treatment options that alleviate pain symptoms in patients who suffer from serious ailments.

For further information, please visit the Company’s website: www.gwpharm.com