Oliver Barnett

Managing Director

Oliver is considered one of the UK’s leading health experts who features regularly in the national press and has lectured at all of the UK’s top nutritional colleges and a number of corporate institutions.  He has now treated over 15,000 patients, helping them regain their health from a myriad of health conditions.  He has a special interest in complex chronic illness, unexplained illness, Lyme disease, thyroid health, autoimmune conditions especially Hashimoto’s and rheumatoid arthritis, and mould illness.

Oliver has always been a keen cook and developed an early interest in food nutrition.  He studied naturopathy nutrition for five years, herbal medicine, functional medicine (being one of the few fully certified functional medicine practitioners in the UK) and consistently does 400-500 hours a year of CPD to ensure that he is at the top of his game in all of his special interest areas.

Oliver has a keen interest in energetic medicine and mind/body medicine, usually preferring patients to emphasise the lifestyle changes over the dietary, supplementation and herbal medicine options. He ensured that after being a sole practitioner, within three years he would steer the London Clinic of Nutrition to being given the highest award within the industry as the outstanding practice of the year award; and also ensuring that the London Clinic of Nutrition is the most highly reviewed functional medicine practice in the UK on Google.


  • Institute for Functional Medicine Certified Practitioner
  • Diploma Naturopathy
  • Diploma Nutritional Therapy
  • Dr. Dale Bredesen Certified Practitioner (reversing cognitive decline & advanced clinical training)
  • Dr. Alison Siebecker Certified Sibo Practitioner
  • Diploma Iridology

Continuous Professional Development

  • The Toxic Mould Summit – 2019
  • The international Society for Environmental Illness Inaugural Conference – 2019
  • The Forum for Integrative Medicine (treating the untreatable)
  • Cogence Immunology (1 year course)
  • BSEM Conference on Heavy Metals –  2018
  • Jason Hawrelack GI Health Masterclass –  2018
  • ANP Naturopathic Summit
  • A Functional Medicine Approach to Auto Immune Conditions (part 1)
  • A Functional Approach to Auto Immune Conditions (part 2)
  • Naturopathic Detoxification Day
  • Gluten Sensitivity and Coeliac Disease
  • Nutritional Endocrinology
  • Nutri-Functional Medicine Conference (2 days)
  • Institute for Functional Medicine Nutrition Head to Toe (3 days)
  • How to Reverse Autoimmune Disease with Functional Medicine
  • Juggling the Endocrine cycle
  • The Gut Brain Axis
  • Nutritional approaches to Autoimmune Disease (part 1)
  • Nutritional approaches to Autoimmune Disease (part 2)
  • Nutritional approaches to Autoimmune Disease (part 3)
  • Healing so Called Incurable Illnesses
  • Thyroid Health and Iodine Therapy
  • Clinical Trinity I
  • Clinical Trinity II
  • Nutrigenomics
  • Lyme Disease Summit
  • Lifting the Veil – Lyme disease (part 1)
  • Lifting the veil – Lyme disease (part 3)
  • Nutrigenomics – 2016
  • Institute for Functional Medicine Immune module
  • Institute for Functional Medicine Energy Module
  • Institute for Functional Medicine Cardiometabollic module
  • Insititute for Functional Medicine Detox module
  • Applying Functional Medicine in Clinical Practice
  • Functional Medicine Head to Toe
  • The Omics Revolution
  • Solgar Gastrointestinal Health Workshop
  • Detox – The Key to Health Ageing – CAM Conference
  • Feeding the Gut – Health through Microbiome Modulation – CAM Conference
  • Hidden Health Trends in Clinical Settings Using Blood Chemistry Analysis
  • Nutrigenomics In Practice: Methylation
  • CAM Summit – 2016
  • Individual Diet DNA – Unlocking the Power of Nutrigenomcis – March 2016
  • Feeding the Brain – Nutrition for Bullet-proof Neuroimmunity – September 2016
  • Nutrition Resolution – Breaking the Cycle of Stress and Chronic Inflammation – November 2016
  • Lyme, Viruses and Co-infections a Critical Understanding – October 2016
  • Women’s Health Summit
  • The Tick factor Lyme Conference – September 2016
  • Richie Shoemaker 2nd international Conference on CIRS
  • Truth about Cancer
  • The Truth about Vaccines
  • Inflammation and Antioxidants – CAM conference
  • Treating the Untreatable – unravelling complex chronic illness (Mould/Lyme conference)
  • Gut Health Conference – CAM
  • Bredesden Training in Reversing Cognitive Decline (3 day course)
  • Bredesden Training (one day course)
  • Forum for Integrative Medicine
  • IHCAN Summit – 2018
  • SIBO Symposium – 2018
  • ISEAI Conference – 2020
  • Forum for Integrative Medicine – 2020 and 2021

Specialises In

Lyme Disease



Chronic Fatigue

Autoimmune Disease