Meet the Team

Created by GPs, for GPs - meet the team behind the Primary Care Cannabis Network -including our experienced advisory team, who are here to support GPs, medical professionals and patients alike to navigate the world of cannabis based medicines.

Dr Leon Barron (Founder)

Dr Barron is a GP based in London, UK.  His interests within General Practice include mental health and managing complex symptoms that often combine physical, psychological and social components. A holistic approach to his clinical practice has led to an interest in medical cannabis as an alternative therapy for patients who have not found conventional therapies to be effective. He has undertaken specialist training in medical cannabis prescribing from leading physicians who are considered global experts in this emerging field of medicine. 

Dr Barron is an executive committee member of The Medical Cannabis Clinicians Society and is member of The Drug Science Medical Cannabis working group and the Conservative Party Drug Policy Reform Group. He continues to undertake regular NHS work and is a visiting tutor for undergraduate medicine at University College London.

Dr Dani Gordon

Dr Gordon is a double board certified medical doctor, GP, Integrative Medicine Physician and world leading expert in CBD and cannabis medicine, having treated several thousand medical cannabis patients in her practice in Canada. 

She is Vice Chair of The Medical Cannabis Clinicians's Society, trained the UK's first cannabis medicine specialists and helped set up the UK's first cannabis medicine centres.

Dr Gordon is an internationally recognised expert and has recently advised the UN narcotic drugs committee on the re-scheduling of cannabis. She has lectured at Imperial College, King’s College, and University College London on medical cannabis.


She also developed the first medical cannabis training program for physicians in the UK and is a consultant for clinical research in cannabinoid medicine working with top researchers around the world. 

Advisory Committee

Dr Julia Piper

Dr Julia Piper is CEO of, working as an Integrative GP on the forefront of biological systems medicine and the application of novel biological evidence based treatments in personalised medicine.


She works with patients who have complex illnesses including long term chronic infection, is the UK ambassador of A4M and the Metabolic Medical Institute in the USA, an active committee Member of the British Society of Ecological Medicine, and is actively involved in training and lecturing in her field.


She currently prescribes CBD in her medical practice and has worked with Dr Saoirse O’Sullivan to publicise some of the cannabis research that is available, to further optimise awareness. She is past Chairman of Medical Choices UK involved with broad based training and awareness of Medical cannabis. 

Dr David Bailey

Dr David Bailey is a GP based in Jersey and worked at Indigo Medical for the past 24 years. His specialist interests include Alcohol and Drugs services and he was one of the first GPs to complete the RCGP module on substance misuse. Dr Bailey is one of the co-founders of Susida Medical, a Jersey based medical clinic focusing on assessing treatment interventions for a broad range of physical and mental health issues. He is very much at the forefront of medical cannabis prescribing within primary care in the UK and is excited to be part of this interesting and developing field of medicine.  

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Dr Harrison Offiong

Dr Harrison Offiong is a GP living and working in Birmingham, UK. He is originally from Nigeria and holds a Masters degree in Public Health from the University of Birmingham. He is developing a specialist interest in pain management and is passionate about optimizing patients experience and outcomes. Harrison is a member of the Medicinal Cannabis Clinicians Society and is keen on improving primary care access to medicinal cannabis and participating actively in this emerging branch of medicine

Dr Julie Moltke

Dr Julie Moltke is a medical doctor from the University of Copenhagen, Denmark. She has worked in orthopaedic surgery and as a GP and the past years she has been based in London where she is working in the medicinal cannabis and wellness industry.


Dr Moltke prescribes medicinal cannabis in Clinic Horsted and works with public education about medicinal cannabis and CBD through her website, and as a speaker on conferences and fairs around the world.


She is the author of the book "A Quick Guide to CBD". Dr Moltke has specialised in stress management and sleep optimisation and she is a yoga and mindfulness instructor and runs a retreat centre on her farm in Southern Sweden.

Dr Anne Katrin Schlag

Dr Anne Katrin Schlag is a Chartered Psychologist and Head of Research at Drug Science. She completed her PhD in Psychology at the London School of Economics and Political Science, before working as Lecturer at King’s College London where she developed her expertise across the spectrum of science and policy making, risk perception, risk management and risk communication. She holds Honorary Fellowships at both Imperial College London and King’s College London. Dr Schlag has a keen interest in the social, ethical and moral dimensions of national and international drug policies, and related regulatory and policy-making challenges.

Within her role at Drug Science, she leads the research for the Medical Cannabis Working Group, focusing on controversies surrounding medical cannabis, the improvement of patient access, and the continued development of education and stakeholder communication about medical cannabis. Dr Schlag is currently working on progressing the scientific evidence base of medical cannabis to include Patient Reported Outcomes, observational studies (such as T21) and the application of Multi-Criteria Decision Analysis to assess the benefits and safety of medical cannabis.

Hannah Deacon

Hannah's son Alfie began having seizures at just eight-months old, which progressively became worse as he grew. After being diagnosed with PCDH19, Hannah began to research treatments which would provide some relief. Following research into alternative treatments for epilepsy, Hannah - along with her family - took Alfie to Holland in 2017, to be treated by a Paediatric Neurologist with medical cannabis as a last-ditch attempt to save his life. The medicine worked, but, unfortunately finances began to run short and there was no way of knowing how to continue the treatment in the UK. 

Returning to the UK and working in partnership with End Our Pain - a movement campaigning for better access to medical cannabis - Alfie's doctor, Professor Mike Barnes, issued the first ever personal prescription for medical cannabis. Soon after this, the law was changed to enable medical cannabis to be prescribed on the NHS by specialist clinicians. 


Hannah continues to campaign for better access to medical cannabis for all patients. The Executive Director of the Medical Cannabis Clinicians Society and Patient Adviser to The Medical Cannabis Clinic, Hannah also runs a Maple Tree Consultancy with Professor Mike Barnes to help ensure access to medical cannabis is available to all. 

Miriam Martinez Callejas

Miriam holds a Master's Degree in Pharmacy, with international experience in Bio-pharmacy Research, Compounding and Nutrition. 

She is responsible for clinical areas of compounding pharmacy, overseeing quality assurance, product development, training and education.

As a pharmacy student, she learned to admire the independent spirit of pharmacy, and to understand the art of formulating. Her first pharmacy job was within a compounding pharmacy, and it is there she developed a passion for helping others; using her experience and knowledge of medicines. 

Miriam has also been trained by professionals in difference countries, from well-known medicines to alternative treatments. Currently working at Roseway Labs, Miriam feels this allows her to provide the best possible medications to maintain a patient's health and wellness.