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The London Clinic


  • Colorectal Surgery
  • General and Gastrointestinal Surgery

Clinical interests

  • Inflammatory bowel disease
  • Colorectal cancer
  • Endoscopy
  • Proctology (haemorrhoids, fissure, fistula)
  • Abdominal wall hernias
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  • Minimal access surgery (Key hole)
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Professional profile

Alastair Windsor trained at St Mary’s Hospital in London. Having spent three years in research at the Medical College of Virginia, USA, he returned as Lecturer and then Senior Lecturer and Honorary Consultant Surgeon to the Academic Surgical Unit at St James’ University Hospital, Leeds. A research and clinical interest in sepsis and nutrition provided an opportunity to join the staff at St Mark’s Hospital in London as colorectal surgeon and surgeon to the intestinal failure unit.
He has now moved to join the staff as Consultant Surgeon to University College Hospital London, and Honorary Senior Lecturer at the University College London. In addition to his NHS practice he has also run a very busy private practice for more than ten years out of The London Clinic and 116 Harley more

He has a national and international reputation, expertise and significant tertiary referral practice in intestinal failure, focused to a large extent on the management of abdominal catastrophe, which includes the management of enterocutaneous fistula and complex inflammatory bowel disease as well as managing complex abdominal wall hernias. He also maintains a busy clinical practice in the broader aspects of colorectal surgery including minimal access surgery, endoscopy, colorectal cancer and proctology (haemorrhoids, fistula, fissure etc).
He is a founder member of Surgical European Crohn’s and Colitis Organization and a committee member of the IBD section of British Society of Gastroenterology. Working with these organizations he has been a contributing author for European and UK guidelines on the management of IBD. He has over one hundred and twenty publications and book chapters and remains a committed surgical trainer and educator.

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Conditions treated

Current posts

  • Consultant Surgeon
    University College London Hospitals NHS Trust
  • Consultant Surgeon
    University College London Hospitals
  • Honorary Senior Lecturer
    University College London
  • Chairman of GI Surgery
    University College London Hospitals

Medical training

Year qualified
  • St Mary's Hospital, London
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Clinic times

Monday: Endoscopy
Wednesday: AM ad hoc
Thursday: AM Consults - all day


Appointment enquiries: +44 (0) 20 3944 1073 Concierge service: +44 (0) 203 219 3323 Self-Pay service: +44 (0) 203 918 7301International office: +44 (0) 203 219 3266 Invoice and payment enquiries: +44 (0) 207 616 7708 General enquiries: +44 (0) 20 3918 9135

Breast services appointments: +44 (0) 207 616 7653 Diagnostics appointments: +44 (0) 207 616 7653 Endoscopy appointments: +44 (0) 207 616 7760 Eye centre appointments: +44 (0) 207 616 7768 Haematology appointments: +44 (0) 207 535 5503 Kidney services appointments: +44 (0) 207 224 5234 Liver services appointments: +44 (0) 207 616 7719 Physiotherapy appointments: +44 (0) 207 616 7651 Radiology appointments: +44 (0) 207 616 7653

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