I have been interested in the medical applications of cannabis since my involvement with GW Pharma in early 2000s and the progression of Sativex to market. I signed off the expert report to the MHRA and this report has been used, with more recent evidence, to establish Sativex now in over 30 countries. 

In May 2016 I was asked by the All-Party Parliamentary Group on Drug Policy Reform to write a report on the evidence for medical cannabis. Cannabis - The Evidence for Medical Use was published in September 2016 by myself and Dr Jennifer Barnes. This report has been influential in progressing the medical cannabis debate in the UK, Channel Islands and Ireland. I have assisted the Irish parliament in that debate through discussion and lectures to the parliament (Dail Eireann). 

On 1st November 2018 the UK Government rescheduled cannabis and it is now legal for specialist doctors to prescribe. Very few have done so (up to December 2019) so much work still to do! I have now lectured widely on the topic (see Invited Speeches and Talks). I have also assisted the End our Pain campaign.

I am the founding Chair of the Medical Cannabis Clinicians Society and a Director of Maple Tree Medical Cannabis Consultancy, an ethical consultancy supporting organisations in the medical cannabis sector. 

I also Chair the Medical Advisory Board at Lyphe Group, work as Clinical Director of Drug Science's Project Twenty21 programme and I am acting Chair of the newly formed Cannabis Industry Council.