About Us

Our aim is to expand patient access to medical cannabis via the Sapphire Access Scheme. We support patients in a safe, responsive, reliable and effective way.

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Sapphire Clinics Multidisciplinary Team


Medical Director

Dr Platt has been a consultant and honorary senior lecturer in pain medicine and anaesthetics at Imperial College since 1991.

Following medical training in Australia, he undertook specialist training in anaesthetics and pain medicine in London. He is a professional and highly effective senior consultant in pain medicine and anaesthetics with over 23 years in senior clinical leadership and specialist roles. In his NHS practice he is a senior consultant at the Imperial Pain Clinic and is frequently referred complex patients from other specialists in the UK and abroad.

Professor Praveen Anand


Neurology / Neuropathic Pain (MDT only)

Professor Praveen Anand is Professor of Clinical Neurology and honorary Consultant Neurologist at Imperial College London.

His medical education was at the Universities of Oxford and Cambridge, and post-graduate training at the Hammersmith Hospital and the National Hospital for Neurology and Neurosurgery, Queen Square, London. His research focuses on pathophysiological and molecular mechanisms in human sensory neuropathies and chronic pain syndromes and he has studied medicinal cannabis for approximately 20 years. He runs an integrated tertiary referral clinic evaluating patients with treatment resistant neuropathic pain.

Dr Mark Weatherall


General Neurology

Dr Mark Weatherall is a Consultant Neurologist at Stoke Mandeville Hospital in the Buckinghamshire Healthcare NHS Trust.

Vice-Chair of the British Association for the Study of Headache and a former Trustee of the Migraine Trust. He was a highly regarded historian of medicine before studying clinical medicine at Selwyn College, Cambridge University. His clinical practice includes the treatment of headache, migraine, epilepsy, Parkinson’s disease, and numerous other neurological disorders.

Dr Shaheen Khan


Palliative Care

Dr Shaheen Khan is a consultant in palliative medicine and lead clinician for the Guy’s and St Thomas’ NHS Foundation Trust …

community palliative care team, the training programme director for the King’s palliative medicine training scheme and the co-chair of the London Opioid Safety and Improvement Group. Dr Khan graduated from Guy’s, Kings’ and St Thomas’ Medical School, having also been awarded a first class honours degree in BSc Neuroscience and an MSc in palliative care from Kings’ College London. His clinical expertise is in complex symptom control and advance care planning.

Dr Jonathan Hoare


Gastroenterology / General Medicine

Dr Hoare is a consultant gastroenterologist and head of endoscopy for the Imperial College hospitals.

He trained at Cambridge University and St Mary’s Hospital Medical School, qualifying in 1993. He undertook a PhD as an MRC research fellow in viral hepatitis and gene therapy from 1998 until 2001. His clinical practice encompasses all aspects of gastroenterology including inflammatory bowel disease and functional problems such as irritable bowel.

Dr James Rucker

MBBS, BSc, MRCPsych, PhD


Dr Rucker is an honorary consultant psychiatrist at the Maudsley Hospital, specialising in mood disorders,  …

 psychopharmacology and novel drug treatments combined with psychotherapy. He is also a Clinician Scientist (senior clinical lecturer level) at The Institute of Psychiatry, Psychology and Neuroscience at King’s College London.

Dr Sushil Beri


Paediatric Neurology

Dr Beri is a consultant paediatric neurologist at Imperial College Healthcare NHS Trust.

He has trained at various university and teaching hospitals across the UK and he undertook his general paediatric training at Alder Hey Children’s Hospital, Liverpool, and Royal Manchester Children’s Hospital. Dr Beri sees young children and adolescents with all kinds of acute and chronic neurological disorders including childhood epilepsy, faints and funny turns, migraines and other headaches, cerebral palsy, neuromuscular and neurogenetic disorders.

Pharmacy Team

Carl Holvey

MPharm, MRPharmS, DipCLinPharm, IPresc, MBA

Chief Pharmacist

Carl Holvey leads the team of pharmacists at Sapphire Medical and brings years of experience as a Clinical Pharmacist and healthcare manager in the NHS. He has worked in various sectors of healthcare delivering direct patient care and managing services.

Carl ensures excellent standards of pharmaceutical and clinical care for all our patients. He also sits on advisory board at PLEA (https://www.pleacommunity.org.uk/) and delivers training on cannabis-based medicines to hundreds of clinicians.

Evonne Clarke

BSc(Hons), MSc, IPresc


Evonne has worked in the hospital pharmacy sector since qualifying in 1996 and has developed an interest in Pain Management whilst working in and leading the Medicines management service in the Surgical directorate where she also completed her prescribing qualifications in Acute pain. 

Evonne continued to work with the Multidisciplinary Pain team and moved into working with Chronic Pain patients 5 years ago, providing Pharmacist support and clinics in the Out Patient setting.

Katy McLachlan

MPharm, PgCert, PgDip, IPresc, MFCI


Katy is an Clinical Pharmacist who specialises in mental health. She gained her Independent Prescribing qualification focusing on the treatment of depression, and has since gained a wealth of experience managing patients with a wide range of diagnoses from mood and anxiety disorders to psychosis and schizophrenia.

She has extensive experience in the NHS in a variety of clinical and management roles, with a focus on digital transformation to improve the efficiency of services.

Meet the Operations Team

Suzy Petty

Clinic Coordinator

“From being a full time international hockey player, to now being part of a fast paced, innovative company. The world of medicinal cannabis is just getting started, and I can’t wait to see how many more people we can help at Sapphire, as this new area of medicine develops!”

Emma Keillor

Patient Coordinator

“My favourite part of the job is bringing the experience I have in customer service and implementing that in to what I do for the patients at Sapphire. When I hear a patient say thank you for the service they are receiving and what a difference it is making to their lives, it’s really rewarding.”

Amy Abbott

Medical Secretary

“Every day at Sapphire we learn new things, and I love to be part of the ground-breaking research we do. It is very rewarding to support the patients through their journey and see them benefit from our help.”

Ben Lee

Full-Stack Software Developer

“I choose to work for Sapphire because of the dedication to the patient experience and our exceptional level of diligence in providing the appropriate medication to patients.”

Judith Kelly

Patient Coordinator

“I really enjoy getting to know our patients by speaking to them daily. Helping guide patients through our process and then seeing them reach their end goal of treatment is so rewarding.”

Managing Director and Academic Lead for Sapphire Medical Clinics, Dr Mikael Sodergren, explains why we set up Sapphire Medical Clinics

He explores the uses of medical cannabis, describing its applications and discusses the future of cannabinoid research in the short and long-term.

Structure of the Clinic

Make an Appointment

Patients seeking an appointment to discuss treatment with medical cannabis can complete our eligibility form. You can provide us with your healthcare records or we can obtain these through your GP.


You will be assessed by one of our expert consultants in the area of your illness. The first consultation typically lasts 40 minutes.


Every prescription will be agreed upon by our Multidisciplinary Team and signed off by our Medical Director. We then deliver the prescription to your nominated pharmacy who deliver your prescription safely to your door.

What legal changes have been made?

On 1st November 2018 the law in the UK was changed regarding medical cannabis. The change was to the Misuse of Drugs regulations 2001. Medical cannabis was re-scheduled from a schedule 1 drug (this means of no medical benefit) to a schedule 2 drug (this allows doctors to prescribe medical cannabis in certain situations).

In practice this means that some patients who have exhausted conventional therapies are able to receive a prescription for medical cannabis. Only doctors on the specialist register of the GMC are authorised to prescribe cannabis medications, and satisfy the the guidelines issued by GMC, NHS England and MHRA.

Sapphire Medical Clinics is the first UK medical cannabis clinic registered by the CQC