Areas of Expertise
Dr Wilson performs a range of treatments, including:
- Colonoscopy (including bowel cancer screening)
- Endoscopy
- Endoscopic mucosal resection of colonic polyps
- Colonic stricture dilation
Some of the most common conditions she treats are:
- Irritable bowel syndrome (including food intolerance)
- Inflammatory bowel disease (Ulcerative colitis and Crohn’s disease)
- Consequences of cancer treatment
- Radiation proctopathy
- Pelvic radiation disease
- Lower anterior resection syndrome (LARS)
Career Highlights
Dr Ana Wilson, BA, BMBCh, MD, MRCP, is consultant gastroenterologist and specialist endoscopist at St Mark’s Hospital (part of London North West University Hospital NHS Trust) and the Royal Marsden Hospital.
She is a luminal gastroenterologist and specialist gastrointestinal endoscopist. Her specialist interests include early diagnosis, prevention and treatment of pre-cancerous lesions and cancer, through colonoscopy, in patients with inflammatory bowel disease and those at increased risk of developing colorectal cancer as well as through national Bowel Cancer Screening Programme.
Dr Wilson qualified from University of Oxford in 2002. She obtained Membership of the Royal College of Physicians in 2005 and trained in gastroenterology and general internal medicine in Oxford Deanery. She spent three years at the Wolfson Unit for Endoscopy, St Mark’s Hospital undertaking research in the use of colonoscopy in diagnosis and assessment of dysplasia, under the supervision of Prof Brian Saunders. This led to an MD thesis at the Imperial College, London, and she has been widely published on the subject.
After completing her training, Dr Wilson specialised further in management of complex inflammatory bowel disease and endoscopy at University College Hospital, London. She was appointed as Consultant Gastroenterologist and Specialist Endoscopist at St Mark’s Hospital, in December 2012.
At St Mark’s Hospital, she is one of a few specialists specialising in ulcerative colitis surveillance (detection of pre-cancerous lesions). She leads the service for patients who have gastrointestinal problems following cancer treatment both at St Mark’s Hospital and The Royal Marsden.
Dr Ana Wilson partnered with Welbeck Health in 2018 to collaboratively develop the OneWelbeck Digestive Health Centre.
Get to know Dr Wilson…

We had involved our anaesthetic colleagues early on to discuss the option of offering propfol sedation: a very safe anaesthetic that would ensure patients’ comfort but also rapid recovery.
Dr Ana Wilson
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What are the moments which stand out most in your career so far?
Probably being appointed as a consultant at St Mark’s, passing bowel cancer screening accreditation in 2013 and being approached to do sessions at The Royal Marsden.
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You had a leading role in setting up procedures and policies. What does this involve and how has your previous work around policy at St Mark’s helped?
Enormously. St Mark’s is a World Endoscopy Organisation centre of excellence and we pride ourselves on providing highest specialist care to patients. All procedures and policies are based on latest evidence with focus on patient safety.
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Why did you choose to be part of the OneWelbeck team?
All the specialists who are part of OneWelbeck are of highest standard and many of them have been my mentors and friends over the years. I can honestly say I would be happy to recommend any of them to my friends or family, which is a rare privilege. We have all contributed to the design of the facilities with patients centred in mind and have been actively involved in everything from selecting flooring to purchasing of equipment, ensuring that we can provide the highest level of service in an environment that is as pleasant and comfortable as possible for the patients.
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How do you like to spend your free time?
I enjoy spending tine with my young children and, in my rare free time, practising yoga, reading and going to the theatre.