Functional Medicine Associates in London

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Functional Medicine Associates

London · Marylebone · updated 5 July 2026

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Prices checked once on record, 5 July 2026.

Treatments
7
Categories
2
From
£190
With pricing
6
Functional Medicine Associates is an IFM-certified functional medicine clinic at 51 New Cavendish Street in London's Marylebone, where single consultations start at £380 and its 4 to 5 month Foundation Programme is priced at £3,200.

Key facts

Discovery Consultation (60 min)
£380
Comprehensive Consultation
£760
Foundation Programme (4 to 5 months, 6 hours consultation)
£3,200
DNA Health Pathway
£1,600
DNA Mind Pathway
£1,600 (30 genes tested)
IFM Certified Practitioners
Yes, team of 6
Companies House number
07538976 (incorporated 2011)
Location
51 New Cavendish Street, Marylebone, London W1G 9TG

Functional Medicine Associates operates from 51 New Cavendish Street in London's Marylebone, close to the Harley Street medical district. The clinic was founded by Pete Williams (M.Med.Sci, CSCS), who was part of the first worldwide cohort awarded Institute for Functional Medicine Certified Practitioner status in 2013 and is a Bredesen-trained practitioner. The wider team of six holds IFM certification alongside qualifications in personalised nutrition, osteopathic medicine, pain neuroscience, microbiome health, and clinical pharmacy, with individual practitioners focusing on areas such as gut health, hormones, chronic pain, cardiovascular disease, and cognitive health.

The clinic structures its services in tiers. Single consultations begin with a one-hour Discovery Consultation at £380 and a Comprehensive Consultation at £760, with follow-ups at £190 for 30 minutes or £380 per hour. For ongoing care, the Functional Medicine Foundation Programme and the Preventative Cardiology Foundation Programme each run 4 to 5 months, include 6 hours of consultation time, and are priced at £3,200, payable as a £1,600 deposit plus £1,600 midway through. Blood work, lab tests, and supplements are charged separately.

Two genomic pathways are offered at £1,600 each: the DNA Health Pathway, which analyses 8 biological processes and returns a 30-page report, and the DNA Mind Pathway, which tests 30 genes linked to cognitive and mood conditions and includes the CNS Vitals neurocognitive assessment. Both use at-home sample collection through the HealthPath Pro platform, with results in up to 4 weeks and a recorded video consultation to review findings. The registered entity is Functional Medicine Associates Ltd (Companies House number 07538976), incorporated in 2011.

7 treatments across 3 categories in the menu and pricing section below.

Compiled from published research and each venue's own published information. Information only, not medical advice.

Information compiled from the clinic's website, last checked 5 July 2026.

Treatments & pricing

Sourced from the clinic's published menu where available.

Team

6 practitioners listed where available.

Deirdre Nazareth

MSc Ost Medicine · MSc Pain Neuroscience · IFM Certified Practitioner · Dip Osteopathy · Dip Naturopathy · IIN Certified Health Coach

Chronic pain · Gut health · Hormones · Skin · Moulds and mycotoxins

Started with a biopsychology degree; worked in human genetics research and fitness; mould-literate practitioner certified by the Kharrazian Institute.

Despina Giannopoulou

MBA · MSc Personalised Nutrition · MSc Microbiome and Health · IFM Certified Practitioner · Certified Gluten Practitioner · Bulletproof Human Potential Coach

Mind-body vitality · Healthy aging · Blood sugar balance · Gut health

30 years of corporate experience (Morgan Stanley, Deloitte) before a career change to healthcare in 2016.

Sue Camp

MSc Personalised Nutrition · IFM Certified Practitioner · mBANT · CNHC Reg

Gut health · Hormone health · Weight management · Adrenal health · Thyroid health

IFM certification in 2019; over 5 years in clinical education with functional medicine testing companies.

Dr. Binyamin Adio

MBBS · MPharm (Hons) · IFM Certified Practitioner

Internal medicine · Medicines optimisation · Acute care · Nutrition

Clinical pharmacist who qualified as a medical doctor from King's College London.

Administrations (2)expand

Pete Williams

Founder · M.Med.Sci · CSCS · IFM Certified Practitioner · Bredesen Trained Practitioner

Corporate burnout · Cardiovascular disease · Brain health · Gut health · DNA testing

Exercise and medical scientist with over 20 years of functional medicine experience.

Shelley Williams

Practice Manager · BSc (Nutrition & Health) · Functional Medicine Certified Health Coach

Former NHS Community Nutritionist; health coach trained through the Functional Medicine Coaching Academy.

Facility

Conditions treated

Health areas Functional Medicine Associates states it works with. General information, not a treatment claim.

Hormone & metabolic

Thyroid disordersInsulin resistance

General

Autoimmune conditionsDepressionAnxietyDiabetesSIBOAdrenal fatigue
Show all 32 conditions

Hormone & metabolic

Thyroid disordersInsulin resistance

General

Autoimmune conditionsDepressionAnxietyDiabetesSIBOAdrenal fatigueFibromyalgiaCardiovascular diseaseChronic pain and inflammationDigestive disorders (IBS, Crohn's, colitis)Persistent fatigueJoint and muscle painDementiaArthritisNeurological conditionsInfertilityInsomniaAsthmaWomen's health disordersCancer preventionSkin conditionsCognitive declineAlzheimer's diseaseCorporate burnoutHigh cholesterolElevated ApoBHypertensionEndothelial dysfunctionWeight managementBrain fog

From @petewilliams_fma on Instagram

A new study from Brazil has looked at calls muscle strength and endurance in the general population. Researchers have de

A new study from Brazil has looked at calls muscle strength and endurance in the general population. Researchers have developed a calculator https://achillestendontool.com/HRET which allows you to estimate more accurately what would be expected for someone of your weight, height, sex and activity l

This is a real cracker of a sequence for not only your legs, but the sort of inside of your legs, it gives you some real

This is a real cracker of a sequence for not only your legs, but the sort of inside of your legs, it gives you some really good internal rotation of the femurs or really good for sort of stretching you around the hips and obviously we get a slight lunge position. So pretty much working you through t

The stairs are always great for working out because they provide work against gravity. And of course, that makes it a li

The stairs are always great for working out because they provide work against gravity. And of course, that makes it a little bit harder. This is a lateral speed skater. You are crossing your feet like a speed skater as you go up the stairs, very much more involves lateral side of your hips inside th

Sometimes we are going to fall and we’re going to find ourselves probably on our back a little bit discombobulated and p

Sometimes we are going to fall and we’re going to find ourselves probably on our back a little bit discombobulated and probably injured to some degree. So one of the drills that we want to be able to do is at least be able to work the floor so that you can get to a position where you can stand up. A

The tibialist walk is one of the most effective exercises for reducing falls and really one of the most simple. All you’

The tibialist walk is one of the most effective exercises for reducing falls and really one of the most simple. All you’ve got to do, as I said, is walk forward, and you’ve got to lift your toes up quickly and powerfully, as if they want to touch your shins. And it is the muscle on the side of the s

So this was taken on day five of my jaw recovery. I’ve stopped the antibiotics, and now I’m going to keep the  strain sp

So this was taken on day five of my jaw recovery. I’ve stopped the antibiotics, and now I’m going to keep the strain specific probiotic, where I’m also looking at ways to create more and more prebiotics. And this meal, particularly cooking up rice and potatoes and letting them cool overnight in the

Practical information

Getting there
Marylebone · Oxford Circus and Bond Street Underground stations are within walking distance
Website
functional-medicine.associates
Certifications
Institute for Functional Medicine (IFM) Certified Practitioners, Bredesen Trained Practitioner (Pete Williams)
Consultation
Required before first session

Location

51 New Cavendish Street, London W1G 9TG, United Kingdom

51 New Cavendish Street, London W1G 9TG, United Kingdom

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About the organisation(expand)

Frequently asked

How much does a consultation at Functional Medicine Associates cost?
A one-hour Discovery Consultation costs £380 and a Comprehensive Consultation costs £760. Ad-hoc follow-ups are £190 for 30 minutes or £380 for an hour. Payment is required 3 days before the appointment.
What does the Foundation Programme include and cost?
The Functional Medicine Foundation Programme runs 4 to 5 months and includes 6 hours of consultation time across an initial consultation, progress and support sessions, health coaching, a lab review, and a final consultation. It costs £3,200, paid as a £1,600 deposit plus £1,600 midway through. Blood work, lab tests, and supplements are charged separately.
What DNA testing does Functional Medicine Associates offer?
Two pathways at £1,600 each: the DNA Health Pathway analyses 8 biological processes and returns a 30-page report, and the DNA Mind Pathway tests 30 genes linked to cognitive and mood conditions and includes the CNS Vitals neurocognitive assessment. Both use at-home sample collection via HealthPath Pro, with results in up to 4 weeks.
Where is Functional Medicine Associates located?
The clinic is at 51 New Cavendish Street, London W1G 9TG, in Marylebone near the Harley Street district. Oxford Circus and Bond Street Underground stations are within walking distance.
Who runs Functional Medicine Associates?
It was founded by Pete Williams (M.Med.Sci, CSCS), part of the first worldwide cohort of IFM Certified Practitioners in 2013. The team of six includes practitioners with IFM certification and qualifications in personalised nutrition, osteopathic medicine, pain neuroscience, microbiome health, and clinical pharmacy.
Do I need a consultation before starting a programme?
Yes. Single consultations can lead into the clinic's Foundation Programme for ongoing care, and programmes begin with an initial consultation and medical history analysis via the HealthPath Pro platform.

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