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Management & staff

With expertise in research, management, fundraising, policy and more, our team are dedicated to research in homeopathic medicine.

Dr Alexander Tournier BSc DIC MASt Cantab PhD LCHE RSHom

Executive Director

Alex has a First-Class Honours degree in Physics from Imperial College, and a Master in Advanced Study in Theoretical Physics (a.k.a. part III) from Cambridge University. He wrote his PhD on the biophysics of water-protein interactions at the University of Heidelberg in Germany. Alex also trained in homeopathy at the Centre for Homeopathic Education, London and is a registered homeopath.

Alex worked for 10 years at Cancer Research UK (5th institute worldwide for molecular biology) as a researcher working on problems at the interface between biology, physics and mathematics. Alex founded the Homeopathy Research Institute in 2007. Dr Tournier relocated to Switzerland in 2021 to continue his fundamental research at the Institute for Research into Complementary Medicines (IKIM)

Rachel Roberts BSc(Hons) MCH RSHom FSHom FFHom(Hon)

Chief Executive

Rachel has a First-Class Honours degree in Biological Sciences specialising in Physiology from the University of Birmingham. She graduated from the College of Homeopathy, London in 1997 and was in private practice as a homeopath until 2012. Rachel has lectured in homeopathy and medical sciences at various colleges in the UK and overseas. She held the post of Research Consultant for the Society of Homeopaths from 2008-2012 and was awarded an Honorary Fellowship in 2013 to acknowledge her outstanding contribution to Homeopathy. Rachel joined the HRI part-time in 2010 and has worked for the Institute on a full-time basis since 2012. In 2018 Rachel was awarded an Honorary Fellowship by the Faculty of Homeopathy for her highly regarded work in the field of homeopathic research.

Dr Esther van der Werf MSc PhD Dip IACH

Clinical Research Lead

Esther has an MSc in Epidemiology and MSc in Health Policy & Management from Erasmus University Rotterdam, The Netherlands. In 2006 she obtained her PhD on epidemiology and the urinary tract from Erasmus University Rotterdam. Esther is a qualified classical homeopath, trained in homeopathy at the International Academy of Classical Homeopathy (Professor George Vithoulkas, Greece).

She has more than 20 years’ experience of clinical research and project management and subsequently worked as an epidemiologist at University of Medical Centre Utrecht and University of Applied Sciences Leiden in the Netherlands. In 2015 Esther joined the Centre of Academic Primary Care of the University of Bristol, UK, to continue her research on Integrative Medicine and infectious diseases. From August 2018 until August 2019, she initiated and led the research group on Integrative Medicine at the School of Medicine of Taylor’s University, Kuala Lumpur, Malaysia, followed by 2 years leading the Integrative Medicine research department at Louis Bolk Institute in The Netherlands.

Dr Angelina Mosley BSc(Hons) Cantab MSc PhD LCHE 

Project Co-ordinator & Research Advisor

Angelina studied Biological Natural Sciences at Cambridge University before going on to achieve a Masters in Virology and a PhD in Cellular Immunology at Imperial College London.  She then spent several years as a conventional scientist at some of the UK’s top research universities. Angelina graduated from the Centre for Homeopathic Education (CHE), London in 2011 with a licentiate in homeopathy. Angelina has since worked at CHE as a marker and tutor for the Research and Anatomy & Physiology modules. She also held the position of joint Research Consultant for the Society of Homeopaths from 2013 to 2015.

Christopher Connolly BA(Hons) 

Communications Manager

Christopher graduated from Sheffield Hallam University with a degree in Business and Marketing. He spent 5 years working with the British Homeopathic Association, Faculty of Homeopathy, and European Committee for Homeopathy managing digital communications and operations, in addition to freelance website management and content writing, before joining HRI full time in 2017.

Amy Hurlstone BSc (HOns) Psych, LCHE

Events Manager

Amy joined HRI as Events Officer in 2018. In addition to 13 years’ experience as a senior executive in events, she is also a homeopath, having graduated from the Centre for Homeopathic Education (CHE) London in 2011 with a licentiate in homeopathy.

Jacky Johnson

EA to Chief Executive

Jacky joined HRI in 2021 to support Rachel Roberts and the team.  Previously she worked for Environmental Resource Management for 13 years and AT Kearney for 7 years.  Jacky is experienced in executive support, line management, recruitment and event organisation.


In addition to our Scientific Advisory Committee, HRI works with academics worldwide who provide expert input on different areas of homeopathy research on a consultancy basis as and when needed.


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