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Areas of Expertise

Dr John Martin regularly performs a range of treatments, including:

Some of the common conditions he treats are:

Career Highlights

Dr John Martin, MA, MD, FRCP, is a consultant gastroenterologist at Imperial College Healthcare NHS Trust. He was educated at Girton College, Cambridge and King’s College London.

After qualifying in 1990, Dr Martin trained in the north west Thames region and obtained an MD investigating novel methods for colorectal cancer screening. He was appointed consultant gastroenterologist and general internal medicine in 2002.

He has a passion for colonoscopy and performs advanced polypectomy as well as teaching colonoscopy both within the Trust and also at national screening centres. He is a Bowel Cancer Screening accredited colonoscopist and an examiner for BCSP colonoscopy accreditation.

Dr John Martin partnered with Welbeck Health Partners in 2018 to collaboratively develop the OneWelbeck Digestive Health Centre.

Awards & Recognition

Dr Martin leads courses and is regular faculty within two national training centres, teaching on basic and therapeutic courses for junior doctors and also upskilling courses for consultants.

He has also been an endoscopy professional advisor to London QA for more than 10 years and has extensive experience in ensuring the quality of endoscopy within the Bowel Cancer Screening programme.

Research highlights

Dr Martin was the local trial co-ordinator for the FlexiScope trial at St Mark’s Hospital. This was a multi-centred study designed to evaluate the benefit of flexible sigmoidoscopy screening in reducing the incidence and mortality of colorectal cancer.

The positive results from this study provided the evidence base for the introduction of the NHS bowel scope programme.

During this period Dr Martin also undertook research into the feasibility of analysing DNA extracted from stool or enema washings to identify mutations that increase the risk of developing colorectal cancer. He also analysed the genetic profile of colonic polyps in relation to the risk of these polyps developing into a cancer. This research led to the award of an MD for research by London University.

Since being appointed as Director of West London Bowel Cancer Screening Centre Dr Martin has conducted numerous studies within the screening population that have been presented at international conferences

Dr Martin is currently collaborating with a group that are using a novel breath test to identify individuals with colorectal polyps or cancer.

Get to know Dr Martin…

John Martin

The entire OneWelbeck team, including the clinical staff, management and administrative staff are dedicated to delivering high quality healthcare to patients, with a strong emphasis on patient experience. At OneWelbeck, high quality clinical care is delivered in an outstanding, modern purposed-built, patient-centred environment.

Dr John Martin
  • What are the moments which stand out most in your career so far?

    I have a long-term interest in Bowel Cancer Screening so running the successful bid to secure Charing Cross Hospital as a site to deliver screening within the Bowel Cancer Screening programme was a particularly special achievement.

  • Why did you choose to be part of the OneWelbeck team?

    The entire OneWelbeck team, including the clinical staff, management and administrative staff are dedicated to delivering high quality healthcare to patients, with a strong emphasis on patient experience. There is a strong team ethic, with everyone working together to achieve this aim.

  • How do you like to spend your free time?

    I live in South West London with my wife and two children and spend most of my free time with my family.  I am a devoted supporter and season ticket holder at Fulham football club and attend games with my son. I am also a keen runner, cyclist and swimmer and have completed many competitive events and triathlons, including a recent half iron man event.

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