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Recommended by 9 specialists
22 years of experience
Irritable Bowel Syndrome (IBS), Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease

Dr Jason Dunn is a Consultant Gastroenterologist based in London specialising in therapeutic endoscopy, including HALO RFA for Barrett's oesophagus.

He is the Clinical Lead for Endoscopy at Guy’s and St Thomas’ Hospitals, where he was appointed as a consultant in 2012. He has private practice priviliges at London Bridge Hospital as well.

Dr Dunn has a special interest in Barrett’s oesophagus, early Upper GI cancer and oesophageal endoscopic therapy. He is highly proficient in Endoscopic Mucosal Resection (EMR) and Radiofrequency Ablation (RFA) techniques and set up a regional Endotherapy centre at St Thomas for South East region including Kent, Surrey and Sussex. He has written guidelines for the management of Barrett’s oesophagus for London and Kent.

He was awarded a CRUK clinical fellowship at UCL and studied use of optical diagnostics and minimally invasive therapies for the treatment of Barrett’s oesophagus. He gained his PhD in 2011 and has presented his work at national and international meetings. His work on treatment of Barrett’s oesophagus with RFA, and the use of biomarkers to predict cancer progression, has won prizes. He has published in high impact factor journals and book chapters. He currently holds Honorary Senior Lecturer posts at Kings College London and Oslo University in the Institute of Medical Informatics.

Dr Dunn also has an interest in Nutrition, specialising in parenteral nutrition in oncology/palliative care and PEG tube insertion. 

Dr Dunn is the research lead for the Oesophageal Section of the British Society of Gastroenterology. He is an advisor to NICE and medical advisor to Action against Heartburn, a patient support charity. 

Diseases, Medical Tests and Treatments

HALO Radiofrequency Ablation

  • Gastroenterologist; Bowel disease including inflammatory (IBD); Crohn’s Disease; ulcerative colitis; high-quality colonoscopy; Colon polyps; Lynch Syndrome; diarrhoea; abdominal pain; indigestion; dyspepsia; constipation; irritable bowel syndrome (IBS); Reflux; Barrett’s Oesophagus; HALO Radiofrequency Ablation; Endoscopic mucosal resection; Inlet patch; globus; Eosinophilic Oesophagitis; Trans Nasal Endoscopy; general gastroenterology; nutrition

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Offers video consultation
Recommended by 3 specialists
37 years of experience
Irritable Bowel Syndrome (IBS), Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease, Hepatology

Dr Alistair McNair is a Consultant Gastroenterologist who qualified in 1985. He has been a consultant since 1997 and is based in South East London. He manages a wide variety of disorders affecting the intestine and liver. Interests include inflammatory bowel disease (Crohn's disease and ulcerative colitis), irritable bowel syndrome (IBS), coeliac disease, dyspepsia, heartburn (acid reflux), Barrett's oesophagus, abdominal pain, colorectal (bowel) cancer, gastric (stomach) cancer, pancreatic cancer, gall stones and liver disease.

He undertakes many diagnostic procedures of the stomach - gastroscopy and transnasal endoscopy, small bowel - capsule endoscopy and large bowel - colonoscopy and flexible sigmoidoscopy. Therapeutic endoscopic procedures include polypectomy, ERCP, stent insertions and balloon dilatations.

He has held a number of senior management roles including clinical Director for Gastroenterology at The Queen Elizabeth Hospital, Secretary of the endoscopy section of The British Society of Gastroenterology (2009-2012) and regional Training Programme Director. He was given a Bronze National Award for his research and work for national and regional organisations.

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Offers video consultation
Recommended by 4 specialists
32 years of experience
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease, Irritable Bowel Syndrome (IBS), Pancreaticobiliary Medicine (Bile Ducts & Pancreas)

Dr David Reffitt is Clinical Director of Gastroenterology at Lewisham and Greenwich Healthcare Trust.

Dr Reffitt qualified in 1990 from Bristol University. He moved to London in 1993 after completing his General Medical Training in Bristol Royal Infirmary. He then joined the Specialist Registrar and trained in Gastroenterology and Hepatology over the next 7 years at St Thomas' Hospital and King's College Hospital. Dr Reffitt spent 3 years in research and completed an MD thesis in Gastroenterology at The Rayne Institute, St Thomas' Hospital, University of London.

Dr Reffitt has been the Training Programme Director for Gastroenterology registrars in South Thames, Kent, Surrey and Sussex regions since 2009 organising a comprehensive training programme for 75 Gastroenterology registrars.

Dr Reffitt maintains a comprehensive gastroenterology practice dealing with a complete range of disease of the upper and lower digestive tract and as a General Physician managing all medical patients.

Diseases, Medical Tests and Treatments

  • Colorectal cancer
  • Bleeding and bowel cancer screening
  • Irritable Bowel Syndrome (IBS)
  • Bloating
  • Diarrhoea gastro-oesophageal reflux disease
  • Peptic ulceration
  • Coeliac disease
  • Hepatology
  • Diagnostic and therapeutic upper and lower GI endoscopy
  • Diseases of the biliary duct and pancreas
  • ERCP
  • Endoscopic Ultrasound

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Offers video consultation
Recommended by 1 specialist
35 years of experience
Irritable Bowel Syndrome (IBS), General (Internal) Medicine, Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease

Dr Helen Fidler is a Consultant Gastroenterologist, appointed as a Consultant Gastroenterologist in 1998, overseeing the huge expansion of her gastroenterology department while gaining a wealth of clinical experience from an increasing population catchment area since then.

Dr Fidler qualified with a first class degree from Guys Hospital in 1987, training in London in centres of excellence including University College Hospital and The Royal Free Hospital.

Dr Fidler has maintained her research interests in irritable bowel syndrome and inflammatory bowel disease and especially the effect that the symptoms have on patient’s quality of life. Unusually, she has a particular interest in the anxious patient and has built up a multidisciplinary team to support people who would benefit from a holistic approach to troublesome symptoms. In addition to her interest in clinical gastroenterology she has national roles which reflect the high esteem of her colleagues - both as an elected member of BMA Council and as Deputy Chair of the BMA UK Consultants Committee.

Diseases, Medical Tests and Treatments

  • Investigation of abdominal pain
  • Colonoscopy
  • Endoscopy
  • Specialist dietician advice
  • Cognitive behavioural therapy and psychological support
  • Management of the anxious patient and those wishing to avoid medication
  • Luminal gastroenterology
  • Irritable and inflammatory bowel disease
  • Abdominal pain
  • Problems with bowel habit
  • Rectal bleeding
  • Bloating
  • Weight loss
  • Anaemia
  • Suspected food intolerances
  • Dyspepsia and reflux symptoms
  • Early diagnosis of cancers
  • Abnormal liver blood tests

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Recommended by 2 specialists
23 years of experience
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease

Dr Hayee is a Consultant Gastroenterologist at King's College Hospital and has been

Clinical Lead for the department since 2015. He trained at Guy’s Hospital (GKT

Medical School), graduating in 1999, and was appointed a Fellow of the Royal

College of Physicians in 2015. His PhD, awarded in 2010, examined the role of

innate immunity and neutrophil function in Crohn's disease. 

He is also a Reader in Gastroenterology at King’s College London and maintains an active

research interest, supervising several PhD fellows and basic scientists. 

He is nationally-accredited for bowel cancer screening colonoscopy and has specialist

interests in Inflammatory Bowel Disease (IBD) and high-quality endoscopy. He is

training lead for Endoscopy at King's and led development of the specialist IBD

service from 2012-2017, being shortlisted for an HSJ Excellence in Healthcare

award in 2017. In 2011, he was awarded a travelling fellowship to Yokohama,

Japan to study advanced endoscopic techniques with Professors Haruhiro Inoue

and Shin-ei Kudo and is co-director of the King’s Institute of Therapeutic


He has a commitment to innovation and delivering the highest quality service possible;

with thoughtfulness, rapid communication, clarity of information and


Dr Hayee is a member of the British Society of Gastroenterology (for whom he serves as a

member of the Endoscopy section committee), the American Gastroenterological

Association, the European Crohn's and Colitis Organisation, the American and

European Societies for Gastrointestinal Endoscopy and the Association for

Bariatric Endoscopy. 

Diseases, Medical Tests and Treatments

Endoscopic sleeve gastroplasty

Endoscopic mucosal resection/submucosal dissection: early gastrointestinal cancer removal

Abdominal pain






Gastro-oesophageal reflux disease


Crohns disease

Ulcerative colitis





Bowel cancer screening, Large polyp removal

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Recommended by 2 specialists
31 years of experience
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease, Irritable Bowel Syndrome (IBS)

Dr Guy Chung-Faye is a consultant gastroenterologist at King's College Hospital and London Bridge Private Hospital. He previously served as the Clinical Lead in Upper GI Cancer for 15 years and is the current director of Bowel Cancer Screening. He treats patients with a wide range of gastrointestinal disorders, with specific expertise in gastro-intestinal cancer, gastroenteritis, inflammatory bowel disease, irritable bowel syndrome, dyspepsia, bloating and reflux. He is particularly skilled in advanced diagnostic and therapeutic endoscopic procedures and is a nationally qualified Bowel Cancer Screening Colonoscopist with a colonoscopy completion rate of over 95 per cent and very high endoscopic comfort scores.

Dr Chung-Faye graduated from the University of Leicester Medical School and earned a PhD from the University of Birmingham for his work on Gene Therapy in Colon Cancer. He has multiple peer-reviewed journal publications and book chapters to his name and is currently involved in IBD, cancer and genetics research.

In his free time, Dr Chung-Faye enjoys playing tennis and learning languages.

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Offers video consultation
Recommended by 2 specialists
37 years of experience
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease, Hepatology, Irritable Bowel Syndrome (IBS) + 2more

Note - virtual consultation price for initial is £150 and follow up £100

Dr Mike Mendall qualified from Cambridge University and the Middlesex Hospital Medical School with distinction in 1985. He was one of Tatler's top private gastroenterologists in 2013. He undertook specialist training in gastroenterology at St George's in south west London. He is an experienced gastroenterologist and is frequently sought for second opinions on difficult cases. His main NHS base is Croydon University Hospital where he is lead clinician for gastroenterology which delivers 12000 endoscopies per year and he leads the Inflammatory Bowel Disease service which serves 1700 patients. He is an expert interventional endoscopist having performed more than 7000 colonoscopies, 10000 upper GI endoscopies and 3000 ERCPs as well as a large number of other endoscopic procedures. including emergency endoscopy for uncontrolled gastrointestinal bleeding, stenting to relieve obstructions of the oesophagus and gut, videocapsule endoscopy, double balloon enteroscopy and oesophageal physiology studies.

He has served on the British Society of Gastroenterology Clinical Services committee, the Upper GI Cancer London Cancer Alliance board, the National Cancer Intelligence Network Upper GI Cancer committee, and the South Wes London Gastroenterology Training Committee. He has also served on a variety of hospital committees. Dr Mendall has always had a strong research focus and remains actively involved, presenting at and attending many international meetings. HE has made and continues to make important and original contributions in a number of different areas of gastroenterology including dyspepsia, inflammatory bowel disease and irritable bowel. He has more than 100 publications many in prestigious journals including the Lancet, British Medical Journal, Gastroenterology, Gut and the American Journal of Gastroenterology.

Dr Mendall works with dedicated GI radiologists, a specialist histopathologist, upper and lower GI surgeons and GI dieticians.

On Behalf of Mendall Medical Services

Diseases, Medical Tests and Treatments

  • Upper GI endoscopy 
  • endoscopy 
  • colonoscopy 
  • ERCP
  • oesophageal stenting 
  • oesophagal manometry and Bravo pH studies
  • Enteroscopy
  • Endoscopy 
  • cancer 
  • dyspepsia 
  • irritable bowel and inflammatory bowel disease 
  • IBS




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Recommended by 2 specialists
21 years of experience
Irritable Bowel Syndrome (IBS), Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease

Dr Patrick Dubois is a Consultant Gastroenterologist and Physician at King’s College Hospital in London and he also sees patients privately, including at The London Bridge Hospital. Dr Dubois studied neurosciences at Oxford University and then read medicine at St Bartholomew’s and The Royal London Hospitals - he graduated in 2001 with distinction.

Dr Dubois undertook post-graduate training in London and was appointed a Consultant in 2012. He was awarded a Medical Research Council Training Fellowship in 2006 and attained a PhD in 2011 for research into the genetic causes of coeliac disease and Crohn’s disease.

He now leads the Inflammatory Bowel Disease (IBD) Service at King’s College Hospital, which includes the development of a dedicated clinic for young adults, particularly those transitioning from paediatric services, and a coeliac clinic. This is combined with an interest in nutrition and artificial nutrition support. He also runs the gastrostomy (PEG) service at King’s College, which has achieved consistently superior safety outcomes compared to national benchmarks. He treats patients with a variety of common gastroenterological symptoms including reflux, abdominal pain, bloating, diarrhoea and constipation. He is an accomplished endoscopist and colonoscopist, and has an interest in the detection of pre-cancerous changes in inflammatory bowel disease.

Dr Dubois is a Fellow of the Royal College of Physicians and member of the British Society of Gastroenterology and the European Crohn’s and Colitis Organisation. His research into IBD and coeliac disease has been published as have his many articles in gastroenterology.

Diseases, Medical Tests and Treatments


  • Colonoscopy
  • Endoscopy
  • Gastroscopy


  • Colitis
  • Coeliac Disease
  • Crohn's Disease
  • Gastro-oesophageal Reflux Disease
  • Nutrition
  • Inflammatory Bowel Disease
  • Irritable Bowel Syndrome
  • Bloating
  • Constipation
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Recommended by 3 specialists
32 years of experience
Hepatology, Irritable Bowel Syndrome (IBS), Pancreaticobiliary Medicine (Bile Ducts & Pancreas)

Dr Terence Wong is a Consultant Gastroenterologist and Hepatologist at St Thomas’ hospital and currently the clinical lead in hepatology and the oesophageal laboratory at St Thomas’ hospital.

Dr Wong graduated from Cambridge University and received post-graduate training at St Bartholomew’s hospital, St Thomas’ hospital and King’s College Hospital. He was awarded an MD thesis in 2001.

Dr Wong's research interests include gastroesophageal reflux disease, hepatitis, hepatology and hepatobiliary endoscopy and he has authored over 100 publications and abstracts in these fields.

Diseases, Medical Tests and Treatments

  • Cholangioscopy
  • Colonic Stenting
  • Colonoscopy
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Endoscopy
  • FibroScan (Transient Elastography)
  • Gastroscopy
  • Liver Biopsy
  • Oesophageal Stenting
  • Percutaneous Endoscopic Gastrostomy (PEG)
  • Sigmoidoscopy
  • Gastroenterology
  • Hepatology
  • Achalasia
  • Acid Reflux
  • Autoimmune Hepatitis
  • Barrett's Oesophagus
  • Cholestasis
  • Fatty Liver Disease
  • Gastric (Stomach) Ulcers
  • Gastro-Oesophageal Reflux Disease (GORD)
  • Gastro-Oesophageal Reflux Disease (GORD) Or Reflux
  • Gastroparesis
  • Haemochromatosis
  • Heart Burn
  • Hepatitis
  • Hiatus Hernia
  • Inflammatory Bowel Disease
  • Inflammatory Bowel Diseases (IBD) Such As Ulcerative Colitis Or Crohn's Disease
  • Irritable Bowel Syndrome (IBS)
  • Jaundice
  • Liver Disease
  • Oesophageal Spasm
  • Oesophagitis
  • Primary Billiary Cholangitis (PBC)
  • Upper Gastrointestinal Conditions (Oesophagus & Stomach)
  • Wilson's Disease
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36 years of experience
Irritable Bowel Syndrome (IBS)

I help patients with a broad range of problems ranging from Irritable Bowel Syndrome (IBS), bloating/gas, troublesome bowels and tummy pain, passing blood to concerns about bowel cancer risk and oesophageal acid-reflux.

I try to do as much follow up as possible (sending on results, reports etc.) by email to save on unnecessary trips for you to the hospital and I also avoid any invasive tests where there is a good alternative available. If you are self-paying, or have limited insurance cover, I can highlight the tests that can be done through your NHS family doctor.

I am recommended by BUPA's "Open referral" service where >90% of patients say both the "Consultant" and "Quality of Care" was Very good/Excellent. My endoscopy results are independently audited every six months and have been always consistently above national standards.

I have a particular interest in endoscopy, colonoscopy and the advanced technique of endoscopic ultrasound (EUS) which allows detailed views of all the organs around the stomach, including pancreas, whilst performing an endoscopy

I am a Consultant Gastroenterologist at Guy's and St.Thomas' Hospital, London, where I was Chief of the Department. I have been chairman of the UK/Ireland EUS Users' Group and a member of the International Committee of the American Society for Gastrointestinal Endoscopy (ASGE).

I qualified - cum laude - from the Royal College of Surgeons in Ireland (1986) and trained in Gastroenterology at St. James's Hospital, Dublin (1989-1992), the Academic Medical Centre, Amsterdam (1992-1996) and at Guy's and St. Thomas' Hospital, London (1996-1999). I have published research papers and text-books on topics including the immunology of IBD (PhD, University of Amsterdam); large bowel folate metabolism (MD, Trinity College, Dublin) and endoscopic ultrasound.

I have maintained and built on his skills by intermittent attachments at international centres in Japan, France and Germany as well as attending and presenting at international conferences and medical summits.

I was twice awarded the prestigious “Teachers” award by the American Endoscopy Society (ASGE) in 2007 and 2013

Diseases, Medical Tests and Treatments
  • General gastroenterology
  • Endoscopy
  • Irritable Bowel Syndrome (IBS)
  • Troublesome Acid Reflux 
  • Heartburn/dyspepsia (indigestion) 
  • Cancer screening 
  • Colonoscopy/gastrosocopy and advanced endoscopic procedures (EUS)
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