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Miss Sarah Mills — Consultant Colorectal Surgeon

Welbeck London  ·  HCA The Lister  ·  Chelsea & Westminster Hospital

London Private Practice

Miss
Sarah
Mills

BSc  BMBCh  MD(Res)  FRCS

Oxford-trained colorectal surgeon. St Mark's Hospital fellow. Specialist in minimally invasive colorectal surgery, TAMIS, and interventional endoscopy.

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Featured in
Tatler — Doctors Guide Top Doctors — 5.0 · 76 reviews Bupa Platinum — Fee Assured
Miss Sarah Mills
Miss Sarah Mills
Consultant Colorectal Surgeon · London

About

Precision surgery.
Compassionate care.

I trained at Oxford and St Mark's — the world's foremost colorectal centre. That foundation informs everything I do in private practice.

Miss Sarah Mills is a Consultant Colorectal Surgeon at Welbeck London and Chelsea & Westminster Hospital, where she leads the Colorectal Cancer MDT. She holds an Honorary Senior Lecturership at Imperial College London and was appointed UK National Training Lead for the Joint Advisory Group on GI Endoscopy in 2022.

Her specialist practice spans colorectal and anal cancer, TAMIS for early rectal lesions, complex interventional endoscopy, and the surgical management of inflammatory bowel disease.

Oxford
BSc (Hons) BMBCh
Imperial · St Mark's
MD(Res) 2005
RCS England
FRCS Gen Surg
JAG · 2022
National Training Lead

Clinical Expertise

What I treat

Cancer
Colorectal Cancer
Laparoscopic and minimally invasive surgery for colon and rectal cancer, with rapid-access MDT pathways.
Cancer — Specialist
Anal Cancer & AIN
HPV-related anal cancer and high-grade AIN. High-resolution anoscopy, surveillance, and laser ablation.
Endoscopy
Interventional Endoscopy
Complex polyp removal, EMR, and TAMIS — treating early lesions without major surgery.
IBD
Crohn's & Ulcerative Colitis
Surgical management of IBD including laparoscopic resection and complex perianal Crohn's disease.
Proctology
Haemorrhoids, Fistula & Fissure
Full range from outpatient procedures to laser proctology, FILAC, and botulinum toxin injection.
Diagnostic
Colonoscopy & Screening
Private bowel cancer screening, colonoscopy, and flexible sigmoidoscopy by a JAG-accredited endoscopist.

Specialist Technique

Early rectal lesions —
without major surgery

TAMIS (transanal minimally invasive surgery) removes large polyps and early rectal cancers through the anus, avoiding bowel resection. Miss Mills is one of a small number of UK surgeons offering this privately.

  • Avoids bowel resection
    Suitable for T1 rectal cancers and large polyps that would otherwise require open surgery or a stoma.
  • Day-case or overnight
    Faster recovery and return to normal activity within days.
  • Preserves bowel function
    Full-thickness excision with clear margins and normal bowel continuity.
  • Available at Welbeck & The Lister
    Both sites offer day-case surgical facilities in central London.

Consultations & Procedures

What to expect

01
Initial Consultation
A thorough assessment of your history and symptoms, clinical examination, and clear explanation of findings. Miss Mills does not rush consultations. From £300.
02
Diagnostic Endoscopy
Colonoscopy, flexible sigmoidoscopy, and high-resolution anoscopy performed by a JAG-accredited endoscopist with specialist reporting. At Welbeck London.
03
Minimally Invasive Surgery
Laparoscopic colorectal surgery, TAMIS, laser proctology, and keyhole procedures for benign colorectal disease. At Welbeck and HCA The Lister.
04
Cancer Pathways & Follow-Up
Rapid MDT coordination if cancer is suspected. Ongoing surveillance and post-operative care in partnership with your GP. From £175.

Patient Reviews

What patients say

5.0
★★★★★
76 verified reviews · Top Doctors

Miss Mills was extremely attentive and went above and beyond. Her care, consideration and thoroughness were genuinely exceptional — I never once felt rushed.

A.D. · June 2026 · Top Doctors

Outstanding professionalism dealing with a very complex surgery. Her support and continuous care helped me recover pain free and stress free.

B.H. · January 2025 · Top Doctors

Miss Mills stands out — not merely by breaking barriers but by setting a new standard of care. I cannot speak highly enough about her excellence.

B.K. · November 2024 · Top Doctors

Research & Education

Beyond the
operating theatre

Research & academic work

Miss Mills' MD(Res) examined the immunomodulatory role of n-3 fatty acids in inflammatory bowel disease, awarded by Imperial College in 2005. She sits on the RM Partners Regional Cancer Alliance and publishes widely in peer-reviewed surgery journals.

She also leads and teaches surgical safety courses in sub-Saharan Africa through the SAFE OR programme, a multidisciplinary theatre team course run under the Royal College of Anaesthetists.

Colorectal Cancer IBD Endoscopy TAMIS Global Surgery
National Training Lead — JAG on GI Endoscopy

Appointed 2022. Miss Mills leads endoscopy training and accreditation standards across the UK through the Joint Advisory Group on Gastrointestinal Endoscopy.

UK National Role · Since 2022
Honorary Senior Lecturer — Imperial College London

Department of Surgery & Cancer. Active postgraduate teaching and supervision alongside clinical practice.

Imperial College London

Private Practice

Where to see
Miss Mills

  • Welbeck Digestive Health
    1 Welbeck Street, Marylebone, London W1G 0AR
    Mon & Wed mornings · 020 3131 9188
  • HCA The Lister Hospital
    Chelsea Bridge Road, London SW1W 8RH
    Surgery & consultations
  • HCA Sydney Street Outpatients
    102 Sydney Street, Chelsea, London SW3 6NR
    Consultations & diagnostics

Insurance accepted

Bupa AXA Health Aviva Cigna Vitality WPA Self-pay

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