
Mr Alexander von Roon
Consultant Colorectal Surgeon
About Alexander von Roon
Mr Alexander von Roon is a consultant colorectal surgeon at Welbeck Digestive Health, specialising in inflammatory bowel disease, colorectal cancer, minimally invasive surgery, proctology and complex hernia surgery.
He was the clinical lead for enhanced recovery after colorectal surgery whilst at Imperial College and is currently co-lead for inflammatory bowel disease surgery at University College London Hospitals.
Mr von Roon completed his undergraduate medical training at Sheffield University and Imperial College London in 2001 and undertook higher surgical training on the Northwest Thames Rotation. He received a research fellowship from the Royal College of Surgeons of England in 2008 and was awarded a PhD by Imperial College London in 2012.
He underwent subspecialist training in colorectal surgery in Adelaide, Australia and St Mark’s Hospital before being appointed Clinical Senior Lecturer and Consultant Colorectal Surgeon at St Mary’s and Charing Cross Hospitals in 2015. During this time, he started specialising in inflammatory bowel disease surgery, became clinical lead for enhanced recovery after colorectal surgery and trained on the Senhance robotic surgery platform.
In 2019 he moved to University College London Hospital, where he continues to develop his subspecialist interests in surgery for complex inflammatory bowel disease, intestinal failure and minimally invasive techniques.
Expertise
- Colorectal Cancer and Polyps
- Crohn's Disease
- Ulcerative Colitis
- Diverticular Disease
- Fistula in Ano
- Haemorrhoids
- Anal Fissure
- Pilonidal Sinus
- Inguinal Hernia
- Femoral Hernia
- Umbilical Hernia
- Ventral and Incisional Hernia
- Benign Gallbladder Disease
- Benign Skin Lesions
- Laparoscopic Colorectal Surgery
- Complex Inflammatory Bowel Disease and Ileoanal Pouch Surgery
- Intestinal Failure Surgery
- Laparoscopic and Open Hernia Repair
- Including Complex Ventral Hernia and Abdominal Wall Reconstruction
- Laparoscopic Cholecystectomy
- Haemorrhoidal Treatment
- Including the Rafaelo Procedure
- Fistula in Ano and Pilonidal Sinus Surgery
- and Colonoscopy
Overview
- Age of patients seen
- 18+
- Languages spoken
- English
- Online profiles
- Research highlights
Mr von Roon completed his PhD research at Imperial College in collaboration with St Mark’s Hospital, focusing on outcomes of ileoanal pouch surgery for familial adenomatous polyposis and metabonomic profiling of pouchitis in ulcerative colitis. He has maintained a research collaboration with the Polyposis Registry at St Mark’s Hospital and co-supervises several PhD students investigating the natural history of gastroduodenal and ileoanal pouch polyposis in FAP, genetic and environmental factors associated with these and colorectal anastomotic healing.
He also has an interest in evidence synthesis in inflammatory bowel disease, surgical education and surgical trials. He has published over 20 peer-reviewed papers in the field of colorectal surgery and is a reviewer for a number of surgical journals.
- Professional memberships
Association of Coloproctology of Great Britain and Ireland
European Society of Coloproctology
European Crohn’s and Colitis Organisation
Consultations and services
Insurers covered


- +4 more
- Allianz Partners
- Cigna International
- Healix
- Henner
Tests & treatments
Locations
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Frequently asked questions
Yes, but only for certain services. Some consultations, assessments, and treatments can be booked directly, while others require a GP or specialist referral. Please check the relevant service page for guidance, and contact the centre if you’re unsure.
We aim to offer appointments as quickly as possible, and many services have same-day or next-day availability. Waiting times vary depending on the appointment type, specialty, and consultant availability, but our team will always offer the earliest suitable appointment.
Yes. You can arrange an appointment for a family member, or someone you care for, just let us know when you get in touch. We’ll need their details and consent to complete the booking, unless you're their legal guardian or have power of attorney.
Your first consultation includes a detailed discussion of your symptoms, medical history, and lifestyle factors, followed by a thorough examination. It’s helpful if you can bring the results of any previous investigations with you, as well as a list of your current medications. Come with a comfortably full bladder so you can provide a urine sample if requested.
Alex von Roon features articles
- Patient Story
Neil's Story | Rafaelo ProcedureNeil was looking for an effective and safe treatment for his grade 3 haemorrhoids. Read his personal experience with the Rafaelo procedure as his chosen treatment at Welbeck. - Article
What is the Best Treatment for Piles?What are piles, and how can they be treated? In this short post we’re going to discuss how to deal with piles (haemorrhoids). - Article
What Causes Constipation in Adults?Constipation is a condition that most adults will experience at some point. The main symptom is having trouble with your bowel movements; either from the movement being strenuous or you find yourself going to the toilet a lot less than usual.