Overview
111 Harley Street is a plastic surgery and aesthetics clinic in London. Its Longevity Membership, run with nutrition and exercise physiology consultant Dr Richie Barclay, combines tests such as DNA methylation, DEXA, blood biochemistry, gut microbiome and VO2 max with a bespoke plan and monthly reviews.
- What it sells
- 1 membership
- Doctors
- 1 named: Dr Richie Barclay, Ph.D, Nutrition and Exercise Physiology Consultant, leads the Longevity Membership, Ph.D. in Metabolism, Nutrition and Exercise (University of Roehampton), MSc Sport and Exercise Nutrition (Westminster), BSc Sport and Exercise Sciences (Staffordshire), member of the British Dietetic Association
- Your results
- Dr Richie Barclay
- Reviews
- Google: none found
- Trustpilot: none found
- Doctify: none found
- Checked 21st October 2026
Source: web.archive.org, longevity, checked 21st October 2026.
What you get for the money
Longevity Membership (monthly programme with Dr Richie Barclay).
IncludedIf you choose itNot mentioned
- Blood
- “Comprehensive blood biochemistry”
- Body composition
- “DEXA body composition scans”
- Fitness
- “VO₂ max fitness testing”
- Genes and age
- “DNA methylation analysis”
- Follow up
- “With ongoing expert support and monthly reviews, you’re never alone on your path”
- Extras
- “Nutritionist In-Clinic Consultation Fee – £300”
Source: web.archive.org, longevity, checked 21st October 2026.
Is it worth it?
This page does not answer that. Here is what the NHS does for free, and what those who set screening policy say.
- NHS Health Check
- “a free check-up of the health of your heart and blood vessels”
- Who can have it
- People “aged 40 to 74 who do not have” certain conditions, such as heart disease or diabetes, or who already take medicines like statins
- How often
- Every 5 years, by invitation from your GP or local council
- What it checks
- Height, weight, waist, blood pressure, cholesterol and possibly blood sugar, in about 20 to 30 minutes
Source: nhs.uk, NHS Health Check, page reviewed 14th August 2023, checked 20th October 2026.
UK National Screening Committee
“Screening is not for people who have symptoms. People who have symptoms should always consult their GP.”
GOV.UK, published 21st November 2023
NHS
“Private companies offer a range of screening tests that you have to pay for.”
nhs.uk, NHS screening, reviewed 30th July 2024
Could it find something that isn’t there?
UK National Screening Committee
“Screening tests are not 100% accurate and do not provide a diagnosis.”
GOV.UK, published 21st November 2023
UK National Screening Committee
“False negative or false positive results can be harmful, as someone may either be falsely reassured or unnecessarily worried.”
GOV.UK, principles of screening, updated 11th July 2025
After your results
- Who explains them
- Dr Richie Barclay
Source: web.archive.org, longevity, checked 21st October 2026.
Royal College of General Practitioners
“the organisation initiating the screening should not assume that general practitioners will deal with the results”
rcgp.org.uk, screening, October 2019
Before you book
The same checks on every listing, in the words of the clinic, the regulator or the government.
- It sells DEXA. The UK Government says: “providing DEXA for non‑medical sports and wellness purposes is prohibited”. A consultation closed on 1st June 2026; no decision has been published.DEXAGOV.UK, government position, published 30th March 2026; consultation page updated 7th October 2026.
- The Care Quality Commission rated it “Requires improvement” in a report published 23rd March 2023.Registration
Doctors
Every doctor the clinic names, with their entry on the medical register where one was found.
- Dr Richie Barclay, Ph.D
- Nutrition and Exercise Physiology Consultant, leads the Longevity Membership, Ph.D. in Metabolism, Nutrition and Exercise (University of Roehampton), MSc Sport and Exercise Nutrition (Westminster), BSc Sport and Exercise Sciences (Staffordshire), member of the British Dietetic Association
Source: web.archive.org, dr richie barclay, checked 20th October 2026.
What it tells you
The same questions for every clinic. What it says on its own pages, and what it does not.
StatedNot stated
- PricesNot stated
- What each package includesStated
- How long a visit takesNot stated
- How long results takeNot stated
- Who explains your resultsStated
- What happens if something is foundNot stated
- Who pays for follow upNot stated
- Whether results go to your GPNot stated
- Insurance or employer coverNot stated
- Its doctors’ namesStated: 1 doctor
From the clinic’s pages listed under Sources, checked 21st October 2026.
Details
Registration
- Care Quality Commission
- Rated “Requires improvement”, report published 23rd March 2023.
- Registered as
- American Cosmetic Surgery Ltd, 111 Harley Street, London, W1G 6AW
- Registered for
- Treatment of disease, disorder or injury; surgical procedures; caring for adults over 65; caring for adults under 65
Source: the Care Quality Commission’s page for this location, checked 20th October 2026.
DEXA
- Longevity Membership (monthly programme with Dr Richie Barclay)
- Included: “DEXA body composition scans”
Source: web.archive.org, longevity, checked 21st October 2026.
The UK Government’s position, published 30th March 2026, says: “providing DEXA for non‑medical sports and wellness purposes is prohibited”. A public consultation on allowing it closed on 1st June 2026. The government has not yet published a decision.
GOV.UK, government position and consultation, response page updated 7th October 2026.
Sources
- The clinic’s site
- 111harleystreet.com
- Registers
- The Care Quality Commission
- Checked
- 20th and 21st October 2026