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About
Third Sister is a London-based dietetics practice specialising in personalised diet plans for women’s health. From weight loss and hormonal balance to digestive health and overall wellbeing, we help real women navigate their unique challenges through compassionate, science-led nutrition. Whether managing PCOS symptoms, complementing medicalised weight loss, or simply wanting to feel your best, we’re here to guide you towards lasting results.
Based in London, we offer both in-person and online consultations to support women across the UK. Book your free initial consultation today via our website to find the personalised support you need.
Based in London, we offer both in-person and online consultations to support women across the UK. Book your free initial consultation today via our website to find the personalised support you need.
“Evidence-based care tailored to each patient — taking the time to explain options and shared decisions.”
— Miss Clementine Vaughan
Education & training
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2010–2016 MD · Medicine and Surgery
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2016–2020 Residency · Nutrition
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2020–2021 Fellowship · Subspecialty training
Career & appointments
-
2020-09–2021-08 Junior consultant
Licenses & insurance
Medical licenses
GB — Organización Médica Colegial de España (OMC)
Board certifications
European Board of Nutrition
Malpractice insurance:
AmTrust Europe · 1,000,000 EUR coverage
· No claims on file
Procedures performed
| Procedure | Code | Lifetime count |
|---|---|---|
| GP consultation | 99213 | 2,606 |
| Annual physical exam | 99395 | 2,216 |
| Vaccination administration | 90471 | 2,288 |
| Minor procedure (skin) | 17110 | 2,975 |
Services & pricing
| Service | Duration | Modality | Price |
|---|---|---|---|
| New patient consultation (60m) | 60 min | in_clinic|telemed | 180.00 EUR |
| Follow-up consultation (30m) | 30 min | in_clinic|telemed|phone | 90.00 EUR |
| Vaccination administration | 60 min | in_clinic | 360.00 EUR |
| Minor procedure (skin) | 90 min | in_clinic | 270.00 EUR |
Office, team & in practice
Videos
Research & publications
h-index: 3 · i10: 12
-
European registry analysis of Nutrition outcomes
DOI: 10.5032/euroclin.2025.0 · PMID: 36243711 · cited by 198
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Outcomes of Nutrition in adults — a multi-centre cohort
DOI: 10.8055/euroclin.2024.1 · PMID: 30788236 · cited by 156
-
European registry analysis of Nutrition outcomes
DOI: 10.2896/euroclin.2023.2 · PMID: 38795643 · cited by 154
Invited talks
- Practical updates in Nutrition European Annual Congress (Nutrition) · Vienna · 2024 · invited
- Single-centre experience in Nutrition National Society Meeting · London · 2023 · oral abstract
Awards & memberships
Awards
- 🏆 Top-rated Nutrition — London · EuroClinics Patient Choice · 2025 · regional
- 🏆 Excellence in Patient Care · National Society · 2024 · national
- 🏆 Young Investigator Award · European Society · 2023 · international
Society memberships
- WONCA Europe — Family Doctors — Member · since 2021
- national college of family doctors — Member · since 2021
- European Union of Medical Specialists (UEMS) — Member · since 2021
Patient reviews
- Bedside Manner
- 5.00
- Knowledge
- 5.00
- Wait Time
- 4.75
- Staff Friendliness
- 5.00
- Ease Of Appointment
- 4.90
- Value For Money
- 4.92
- Would Recommend Pct
- 99
-
★ 5 verified visit
“Very thorough first visit — explained every step. Booking was easy and the staff were welcoming.”
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★ 5 verified visit
“Took time to listen and reviewed all my previous results. I would absolutely recommend.”
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★ 4 verified visit
“Professional and knowledgeable. Wait on the day was a bit long, otherwise excellent.”
Articles by this doctor
- Patient education Patient guide to Nutrition
- Awareness When should you see a nutrition?
For international patients
- Coordinator
- Patient liaison · clementine.vaughan@euroclinics.example
- Accepted intl insurance
- Allianz Worldwide · AXA Global · BUPA Global · Cigna Global
