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Editorial Standards

At The Governor EVOO UK, we aim to publish clear, accurate and useful information about extra virgin olive oil, food, nutrition, polyphenols and related scientific research.

We create our content to help readers make informed choices, not simply to attract search traffic.

How we create and review content

Articles may be written or contributed to by members of our team, olive oil specialists, producers and external subject-matter experts.
Where relevant, we identify the author and their experience or qualifications.
Maria Blackburn contributes specialist knowledge as a Certified Olive Oil Sommelier, particularly in areas such as olive oil quality, tasting, storage, production and olive varieties.
We treat health and medical information separately.
For scientific and health-related content, we aim to use reliable sources such as:
  • peer-reviewed research
  • systematic reviews and meta-analyses
  • clinical trials
  • universities and academic institutions
  • government and public-health organisations
  • recognised regulatory and olive oil bodies
Where appropriate, an independent qualified professional may also review health-related content.

How we present scientific evidence

Not all scientific research provides the same level of evidence.
We aim to distinguish between:
  • laboratory or animal research
  • observational studies
  • human clinical trials
  • systematic reviews and stronger bodies of evidence
We do not treat early-stage or preliminary research as proof that a food or individual product can prevent, treat or cure disease.
Where The Governor EVOO has been used or supplied in scientific research, we aim to explain the product’s role accurately. Its use in a study does not, by itself, mean that the product has been clinically proven to produce a particular health outcome.
Information on this website is for general educational purposes and should not replace personalised medical advice from a qualified healthcare professional.

Accuracy and transparency

We aim to make factual and product-specific information as clear as possible.
This includes:
  • identifying the relevant product, harvest or batch where laboratory results are quoted
  • linking important scientific claims to appropriate sources
  • separating established evidence from emerging or preliminary research
  • distinguishing fact from opinion or marketing
  • making commercial relationships clear
Because polyphenol levels and other characteristics can vary between harvests, treat current product pages as the main source for the latest batch information.

Corrections and updates

We review and update content when:
  • new scientific evidence becomes available
  • product information changes
  • a new harvest or laboratory result is released
  • regulations or official guidance change
  • we identify an error or unclear statement
Minor spelling, grammar or formatting changes may be made without notice.
If a correction materially changes the meaning of an article, scientific interpretation or important product claim, we may add a visible correction or update note explaining what changed and when.
If you believe we have published inaccurate, outdated or misleading information, please get in touch with us and include the relevant page and details of the issue.

Our commitment

Our aim is simple: to explain extra virgin olive oil and the research surrounding it in a way that is useful, transparent and appropriately evidence-based.
We will always aim to represent scientific research responsibly, acknowledge uncertainty where it exists and correct significant errors when they are identified.
★★★★★
I have been using The Governor evoo for 5 months now with my 7 year old daughter who is on the spectrum, since using it I have seen an increased calmness in her and her ability to sit still has improved. I put this down to it being the early harvest and having high polyphenols which help lower inflammation….. based on current research I believe most people would benefit from a daily dose of what I call liquid gold
Jacky
★★★★★
I started using this oil 3 months ago and am noticing the significant health benefits especially in my joints!Would highly recommend it as it tastes great and I don't even like olives!!!!
Mandy Johnson
★★★★★
It really is the Governor of olive oil!!!
Tom Kerridge Michelin-starred chef
★★★★★
I consider the Governor one of the best high phenolic oils Greece produces and always include in my tastings. Cannot think of a more caring and beautiful gift to yourself or a loved one!
Irini Tzortzoglou- Greek cook and winner of the MasterChef 2019 UK
★★★★★
This is the best olive oil we have ever had, it's far superior than any other we have tried, we won't be buying any other. We are on our 2nd bottle now and the added health benefits makes it even more appealing and the service is first class.
Jane Grime
★★★★★
I have bought many Extra Virgin Olive Oils from all over the world and IMHO the Governor Premium is the best of them all.......hands down.Everything from ordering, packaging and of course the quality is exceptional. Wonderful health benefits with this Olive Oil.
Bernand Donnelly

The Governor has been so far studied for...

The polyphenols in the Governor EVOO are measured by NMR - Nuclear Magnetic Resonance. NMR is very expensive to use but it is proven to be the most accurate way for producers to identify their olive oil as high phenolic olive oil.

The oleocanthal concentration in EVOO can vary considerably. This is due to several factors, including the variety of olive, geographical location of the olive trees, olive maturity when pressing, cultivation and production techniques. 


Research context: The Governor EVOO has been supplied for many academic studies investigating high-oleocanthal olive oil. Participation in research does not mean the product has been clinically proven to prevent, treat or cure disease.

  • Olive Compound Oleocanthal: A New Possible Treatment Approach for Aggressive Prostate Cancer - Published November 2025
  • High Polyphenol Extra Virgin Olive Oil and Metabolically Unhealthy Obesity: A Scoping Review of Preclinical Data and Clinical Trials - Published February 2025
  • The Olive Oil Phenolic S-(-)-Oleocanthal Suppresses Colorectal Cancer Progression and Recurrence by Modulating SMYD2-EZH2 and c-MET Activation - Published January 2025
  • Acute Antiplatelet Effects of an Oleocanthal-Rich Olive Oil in Type II Diabetic Patients: A Postprandial Study - Published May 2024
  • Consumption of Olive Oil and Diet Quality and Risk of Dementia-Related Death - Published May 2024
  • Extra virgin olive oil enhances the blood-brain barrier function in Mild Cognitive impairment - Published December 2022
  • Oleocanthal Attenuates Metastatic Castration-Resistant Prostate Cancer Progression and Recurrence by Targeting SMYD2 - Published July 2022
  • The effect of Dietary Intervention with high oleocanthal and oleacein olive oil in patients with early stage chronic Leukemia - Published 21 January 2022
  • Olive Polyphenols: Antioxidant and Anti-Inflammatory Properties - Published June 2021
  • Oleocanthal is inhibiting lung cancer – published 11 June 2020 
  • Safety Evaluation of single dose of Oleocanthal  – published 20th January 2020
  • Oleocanthal combine with lapatinib treatmentsynergized against HER 2 breast cancer – published 15th February 2020
  • Alzheimer and cancer cells at the ULM and hunter college of New York ( Cornel University)
  • Oleocanthal rich restores the blood – brain barrier – Accepted  12th June 2019
  • Hydroxytyrosol, Tyrosol and Derivatives and Their Potential Effects on Human Health - Published May 2019
  • Oleocanthal on its oral anti breast cancer activity – published  9th April 2019
  • Optimization of taste masked oleocanthal – 5 October 2019
  • Oleocanthal rich enhances donepezil effect by reducing amyloid b and toxicity of Alzheimer disease  – 8th may 2018
  • Olive oil intake is inversely related to cancer prevalence: a systematic review and a meta-analysis of 13800 patients and 23340 controls in 19 observational studies - Published July 2011

Scientific Advisors

Dr. Prokopios Magiatis and Dr. Eleni Melliou are at the forefront of olive oil research. Dr. Magiatis is a co-founder and vice-president of the Oleocanthal International Society and co-founder of the World Olive Center for Health in Athens. Dr. Melliou is co-founder and general secretary of the Oleocanthal International Society and co-founder of the World Olive Centre for Health in Athens.

The World Olive Centre is a specialised organisation dedicated to the study of the health benefit’s of Olive oil. Its main objective is to provide support for clinical trials using high phenolic extra virgin olive oil.

Prokopios Magiatis research is focused on the isolation, chemical synthesis and bioactivity of natural products especially olive oil. He is an expert on the analyses and measurement of bioactive compounds like oleocanthal in olive oil. Dr. Eleni Melliou research is focused on the chemistry of natural products and particularly on isolation and structural identification of bioactive small molecules from foods with the use of chromatographic and spectroscopic methods.

“We can certify that The Governor is an extremely rare extra virgin olive oil that stands out from the usual oils. It is an oil highly recommended to all consumers looking for olive oil with enhanced properties for health protection”

 Prokopios Magiatis, Associate Professor – Athens University Faculty of Pharmacy