Dr John Martin

Dr John Martin
Gastroenterology
Central London


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Dr John Martin

Gastroenterologist in
London

MD MB Bchir FRCP MA

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Dr John Martin areas of expertise:

Professional statement

Dr John Martin graduated from Girton College, Cambridge and King’s College Hospital, London in 1990 and completed his gastroenterology training within North West London.  He is a highly-experienced gastroenterologist based in London and holds an NHS Consultant post at Imperial College (ICL).  He is an expert in colorectal cancer screening, therapeutic and diagnostic colonoscopy and has 25 years experience of managing all aspects of gastroenterology including abdominal pain or discomfort, reflux disease, diarrhoea and constipation, rectal bleeding, Irritable Bowel Syndrome, Crohn’s Disease and Ulcerative Colitis.

Dr Martin teaches colonoscopy both within the  NHS Trust and also at national screening centres. He is a bowel cancer screening accredited colonoscopist and an examiner for BCSP colonoscopy accreditation.

Dr Martin is Director of the West London Bowel Cancer Screening Centre, is a professional advisor to Public Health England on the quality and safety of Bowel Cancer Screening within London and is a member of the national advisory committee on quality and safety of endoscopy within screening. He forms an integral part of numerous other professional bodies and has been widely published in peer-reviewed journals.

 Videos of doctor

What is the procedure for a colonoscopy...

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 Doctor's articles

What should I know about a colorectal c...

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 Credentials

GMC: ‍3336920

 Professional experience

• More than 30 years of experience
• Consultant Gastroenterologist, Imperial College Healthcare NHS Trust, London (present)
• Director, West London Bowel Cancer Screening Centre (present)

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 Sub-specialties

• Screening for colorectal cancer
• Colonoscopy
• Performs advanced polypectomy
• Capsule endoscopy
• Inflammatory bowel disease
• Irritable Bowel Syndrome

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 Positions in public associations

• Professional advisor to Public Health England on maintaining endoscopy quality within Bowel Cancer Screening
• Member of advisory committee to NICE on colorectal cancer management guidelines

 Teaching posts

• Teaches colonoscopy within Imperial College Healthcare NHS Trust
• Teaches at at national screening centres
• Colonoscopy teaching faculty at St Georges National Endoscopy Training Centre

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 Education

• Trained as a gastroenterologist in North West London
• King’s College Hospital, London (1986)
• Cambridge University, Girton (1983)

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 Publications and conferences

• Numerous papers, chapters and articles written on his subject field

 Professional membership

• Member of British Society of Gastroenterology
• Member of American Society of Gastrointestinal Endoscopy
• Member of St Mark's Association

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Languages spoken

  • English

Patient reviews for Dr. John Martin

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All reviews are from verified patients booked through Top Doctors.

Patient reviews

Verified Patient
01/02/2017

Would you recommend this doctor?

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  • Friendliness of the staff
  • Wait time
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Diseases, Medical Tests and Treatments

Bloated stomach

What is a bloated stomach? A bloated stomach is when the tummy is stretched and puffy, leaving a person feeling uncomfortable. The most common caus ...

Capsule endoscopy

An endoscopic capsule is a device the size of a pill that contains a camera. It is used to perform examinations of the digestive system and to treat d ...

Colonoscopy

What is a colonoscopy? A colonoscopy is a type of endoscopy that is used to examine the colon and small intestine in order to detect any abnormalit ...

Inflammatory bowel disease (IBD)

Inflammatory bowel disease (IBD) is used to refer to chronic diseases affecting the intestine. the most common are Crohn’s disease (CD) and ulcerative ...

Irritable bowel syndrome (IBS)

Irritable bowel syndrome (IBS) is a disorder of the large intestine. It is characterised by abnormal movements in the muscles of the intestine, which causes discomfort and abnormal functioning, as well as constipation and diarrhoea alternately. The cause is still unknown, although there is evidence that stress increases the symptoms. This condition is often confused with inflammatory bowel disease (IBD), which differs because IBD presents an abnormal structure of the colon. Its diagnosis is necessary to discard other diseases and although there is no cure, being a chronic condition it is recommended to follow a series of measures like reducing stress, avoiding foods that can aggravate like caffeine, tea, fried foods, alcohol and soft drinks. ...

Polypectomy

What is a polypectomy? A polypectomy is a minimally-invasive procedure carried out with a colonoscope or hysteroscope to remove polyps in certain parts of the body such as the colon or uterus. Therefore, the most common types of polypectomy are colon polypectomy and uterine polypectomy. Why is a polypectomy done? A polypectomy is done to remove polyps, which are abnormal growths that can grow in size, causing problems, bleed or be cancerous. Usually, once a polyp is removed, they will be examined in a laboratory to determine whether it is cancerous or not. However, most polyps are benign (non-cancerous). Polyps in the colon are often found during a colonoscopy, which is offered to people in the UK over the age of 50 to check for early signs of colon (bowel) cancer. If signs of cancer are found, then usually further tissue will need to be removed and other cancer treatments discussed. How is a polypectomy performed? Polypectomy by hysteroscopy for uterine polyps are carried out by introducing a hysteroscope through the vagina and the cervix to remove or cut polyps with special surgical instruments. Colon polyps are usually removed at the same time as a colonoscopy. A colonoscope is a special, thin, flexible tube inserted into the rectum and into the colon. It has a light and camera to show the insides of your colon, allowing the surgeon to introduce special instruments to remove any polyps found. There are two main methods of polyp removal via colonoscopy: Snare polypectomy – a thin wire is looped around the base of the polyp and is cauterised with heat, which stops any bleeding and cuts off the polyp. Piece-meal polypectomy – this can remove larger polyps by removing the polyp piece by piece. Preparation for polypectomy: For a colon polypectomy, the bowel must first be cleared. This is done by performing an enema before the test using a special at-home kit. Local anaesthesia is used for uterine and colon polypectomies, and there should be little to no discomfort. Aftercare: Following a uterine polypectomy, you can return home the same day and it is normal to have some bleeding for 4-5 days, as well as some brown-coloured discharge. You should take 1-2 days off work to rest. Following a colon polypectomy you can return home the same day, and you can expect to experience some bloating and cramps for the first 24 hours. You will need to avoid certain foods, such as spicy food, coffee, tea, alcohol and fizzy drinks. For both types of polypectomy, you should not drive for 24 hours. Once the polyps have been analysed, if cancer is detected your doctor will schedule a follow-up to discuss next steps. ...

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    First consultation: £250
    Follow-up consultation: £180

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