Dr Sean Preston is a Consultant Gastroenterologist based at the Royal London Hospital, Barts Health, the UK's largest NHS Trust. He graduated from St Mary’s Hospital Medical School, Paddington in 1995. The majority of his postgraduate training was centred at Barts and the London NHS Trust (a major London Teaching Hospital), in addition to a year spent in Sydney as an Advanced Endoscopy Fellow, prior to his appointment as a Consultant at Barts in 2006.

His clinical practice includes the diagnosis and treatment of gastro oesophageal reflux disease (heartburn), Barrett's oesophagus, irritable bowel syndrome, inflammatory bowel disease, diarrhoea, constipation, bloating, in addition to diagnostic and therapeutic endoscopy of the oesophagus, stomach and colon. He has a keen interest in gut health and gastrointestinal microbiota (bacteria, viruses and fungi) and uses both diet, pre and probiotics in the achievement and maintenance of optimal conditions within the bowel. Clinical consultations are structured to allow patients sufficient time to explain all their symptoms and to fully understand for the cause of their concerns.

His PhD, undertaken at Cancer Research UK, London, outlined the role of stem cells in gastrointestinal cancers and led to several significant publications in the field.

He is Director of Endoscopy at Barts Health and his endoscopic expertise relates to gastroscopy, colonoscopy and endoscopic ultrasound and he is an accredited colonoscopist for the National Bowel Cancer Screening Programme (requiring a rigorous accreditation process and continual audit of key performance indicators). He has written numerous key papers and book chapters on gastrointestinal cancer and continues his research in Barrett's oesophagus.

Dr Preston also featured in the 2013 Tatler Doctors Guide of Britain's top 250 consultants. He was President of the Gastroenterology and Hepatology Section of the Royal Society of Medicine from 2015-2017 and is currently Chairman of the Specialists' Committee for the Independent Doctors' Federation.

As a founding partner of London Digestive Health, within London Digestive Centre, he works within the framework of first class clinical team of other London Teaching Hospital Gastroenterologists, in addition to GI surgeons, Radiologists, Oncologists and a Dietician. 

Dr Preston is also the Chair of Digestive Diseases and Renal Department at HCA Healthcare UK.

It is important that HCA is transparent about our relationship with those doctors who provide us with clinical guidance on delivering the best possible care to patients and operating our hospitals safely and efficiently. We set out here some of the ways in which we work together and the amount we pay this doctor for such services.

Dr Philip Woodland is a consultant gastroenterologist and honorary senior lecturer at the Royal London Hospital, a prestigious London teaching hospital. Dr Woodland's private gastroenterology practice is at the Princess Grace Hospital, which is located in close proximity to London's leading medical district around Harley Street.

Dr Woodland received his medical degree from University College London Hospital and went on to complete his PhD in gastro-oesophageal reflux disease at Queen Mary University, London.

In his clinics, Dr Woodland's approach is simple, he continually endeavours to ensure that his patients feel at ease. He makes certain that all his patients receive the time and attention they need when explaining their symptoms and the impact that this is having on their respective lives. To this extent, he is highly-skilled at correctly diagnosing and recommending the appropriate care and treatment programs.

In both his NHS and private clinics, Dr Woodland diagnoses and treats a wide range of gastrointestinal illness. He is also an advanced endoscopist and is highly skilled at performing diagnostic and therapeutic procedures such as gastroscopies, colonoscopies and endoscopic ultrasounds.

Dr Woodland is passionate about research and has an active portfolio of projects that he is currently working on. His particular focus is on research into gastro-oesophageal reflux disease and difficulty when swallowing. Owing to his experience and exploits, it should therefore come as no surprise that he is regularly invited to present his findings and offer his views at prestigious international conferences and meetings on these subjects.

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• Endoscopy
• Therapeutic gastroscopy
• Colonoscopy
• Endoscopic ultrasound

• Acid reflux (gastro-oesophageal reflux disease)
• Barrett’s oesophagus
• Difficulty swallowing
• Peptic ulcer disease
• Irritable bowel syndrome (IBS)
• Inflammatory bowel disease (IBD)
• Gastrointestinal cancers

Dr Irving trained in Medicine at Cambridge University and The London Hospital Medical College, qualifying with distinction in 1995. He conducted his research at Bart’s and The London on inflammatory bowel disease before moving to Australia for a further period of research.

He is internationally known as an expert in inflammatory bowel disease (Crohns disease and ulcerative colitis) and leads the inflammatory bowel disease service at Guy’s and St Thomas’ Hospital, London where he also runs a large research and clinical trial programme. He has previously sat on the IBD Section of the British Society of Gastroenterology and Chaired the Education Committee of the European Crohns and Colitis Organisation.

Dr Irving also has a specific interest in irritable bowel syndrome (IBS). Together with dietetic colleagues at Guy’s and St Thomas’ and King’s College London, he introduced the low FODMAP diet to the UK and continues to conduct research in this field. Overall he has over 150 publications and has published 3 books.

His practice includes all aspects of luminal gastroenterology with a particular interest in inflammatory bowel disease (Crohn’s disease and ulcerative colitis) and irritable bowel syndrome (IBS). His endoscopic interests include small bowel capsule endoscopy as well as gastroscopy and colonoscopy.

Along with his interest in inflammatory bowel disease, Dr Irving is interested in irritable bowel syndrome, and endoscopy, gastroscopy and colonoscopy.

• Capsule endoscopy
• Colonoscopy
• Endoscopy
• Gastroscopy
• Sigmoidoscopy

• Ulcerative colitis
• Crohn's disease
• Luminal gastroenterology
• Inflammatory Bowel Disease
• Irritable Bowel Syndrome (IBS)

Dr Adam Humphries is a consultant gastroenterologist and specialist endoscopist at St Mark's Hospital, Harrow, an internationally recognised centre of excellence for intestinal disorders and endoscopy. He is the Clinical Lead for Endoscopy and his sub-specialist interests include bowel cancer screening and prevention (nationally accredited bowel cancer screening colonoscopist), colonoscopy and polypectomy, gastroscopy, small bowel diseases, inflammatory bowel disease, video capsule endoscopy, trans-nasal endoscopy and double-balloon enteroscopy. Dr Humphries also leads the small bowel endoscopy service at St Mark's Hospital, a national referral centre and one of only a few sites in the UK that provides double-balloon enteroscopy for the diagnosis and treatment of small bowel diseases.

In 2007 Dr Humphries was awarded a Cancer Research UK Clinical Research Fellowship and subsequently gained a PhD in 2012 from University College London for his research into the biology of gastrointestinal tumours. He has published in prestigious, peer-reviewed scientific journals, presented work at a variety of national and international meetings and published a number of book chapters. Dr Humphries' current academic interests include bowel cancer prevention, evolution of pre-cancerous growths (polyps) within the gut and the diagnosis and treatment of small bowel diseases.

Dr Humphries qualified from Imperial College Medical School in 2002 and undertook his specialist gastroenterology training within London from 2005-2013. He then completed a fellowship in advanced and small bowel endoscopy at St Mark's Hospital before being appointed to the Consultant staff.

• Endoscopy
• Colonoscopy
• Gastroscopy
• Bowel Cancer Screening (nationally accredited bowel cancer screening colonoscopist)
• Polypectomy
• Trans-nasal Gastroscopy
• Video Capsule Endoscopy
• Double Balloon Enteroscopy

• Bowel cancer prevention and screening (nationally accredited bowel cancer screening colonoscopist)
• Endoscopy
• Colonoscopy
• Gastroscopy
• Polypectomy and EMR
• Video Capsule Endoscopy
• Double Balloon Enteroscopy
• Inflammatory Bowel Disease
• Small bowel diseases

Richard Marley is a Consultant Hepatologist and Gastroenterologist. Marley graduated in medicine from Oxford University then Marley completed his postgraduate clinical studies at the Royal Free Hospital and the Hammersmith Hospital. His PhD was on the haemodynamic consequences of cirrhosis. His first post as a Consultant was in 2001 at Sir Charles Gairdner Hospital in Perth, Western Australia.

Marey's special interests include General Gastroenterology, Gastroscopy OGD, Colonoscopy, Flexible sigmoidoscopy, Hepatology, General Gastroenterology and Endoscopy.

• General Gastroenterology
• Gastroscopy OGD
• Colonoscopy
• Flexible sigmoidoscopy
• Hepatology
• General Gastroenterology
• Endoscopy

• General Gastroenterology
• Gastroscopy OGD
• Colonoscopy
• Flexible sigmoidoscopy
• Hepatology
• General Gastroenterology
• Endoscopy

Professor Stuart Bloom is a consultant gastroenterologist at University College London with his private practices operating at HCA Healthcare UK's, The Wellington Hospital and the Physicians' Clinic. Prof Bloom's special interests lie in general gastroenterology, ulcerative colitis, Crohn's disease, IBS, diverticular disease, food intolerance, coeliac disease and gastro-oesophageal reflux. He set up the Bowel cancer screening programme at UCLH and is an accredited bowel cancer screening colonoscopist.

He has been a consultant since 1996 and has been chair of the IBD section of the British Society of Gastroenterology. He is medical director for the UK Inflammatory Bowel Diseases Registry.

Prof Bloom has been researching the cause of Colitis and Crohn's disease and together with Professor Tony Segal at the Raine Institute, he has published a recent paper on the latest findings on the causes of the illness.

Diseases, Medical Tests and Treatments

• General gastroenterology
• Ulcerative colitis
• Crohn's disease
• IBS
• Diverticular disease
• Diverticulitis
• Food intolerance
• Coeliac disease
• Gastro-oesophageal reflux
• Rectal bleeding
• Bowel cancer screening
• General gastroenterology
• Ulcerative colitis
• Crohn's disease
• IBS
• Diverticular disease
• Diverticulitis
• Food intolerance
• Coeliac disease
• Gastro-oesophageal reflux disease (GORD)
• Rectal bleeding
• Bowel cancer screening

Professor Martyn Caplin is Professor of Gastroenterology and Tumour Neuroendocrinology at the Royal Free Hospital and University College London.

Specific interests: general gastroenterology problems (including complex); endoscopy including gastroscopy and colonoscopy; diet associated g.i symptoms and disease; neuroendocrine tumours;

Prof Caplin leads the Royal Free Hospital European Neuroendocrine Tumor Society Centre of Excellence. He leads scientific and clinical research programmes into these rare cancers across University College London. He was elected Chairman of European Neuroendocrine Tumor Society 2014-2016 and now serves on its advisory board. He is a founder and Past-Chairman of the UK & Ireland Neuroendocrine Tumour Society and received a Lifetime Achievement Award in recognition of his clinical leadership and research in the field of rare cancers. He was a member of the National Cancer Research Institute (NCRI) and a Past-Chairman of the rare cancer group. He is currently Chairman of the European Union Reference Network for Rare Cancers for neuroendocrine tumours.

He was previously the clinical lead for “NHS Evidence” for Gastroenterology and Liver diseases (under the auspices of NICE).

He has a particular interest in diet and disease and has published on the evidence base for diet and food supplements and their impact on disease. 

He has published over 200 peer review medical papers, written multiple book chapters and co-authored two books. He regularly lectures both nationally and internationally.

It is important that HCA is transparent about our relationship with those doctors who provide us with clinical guidance on delivering the best possible care to patients and operating our hospitals safely and efficiently. We set out here some of the ways in which we work together and the amount we pay this doctor for such services.

Diseases, Medical Tests and Treatments

• Neuroendocrine (carcinoid) tumours
• Cancer screening
• IBS
• Coeliac disease
• Peptic ulcer disease
• Investigation of Complex GI problems 
• Investigation of diarrhoea disorders
• Neuroendocrine (carcinoid) tumours

Dr Farooq Rahman is a Consultant Gastroenterologist practicing in the heart of London at University College Hospital. In addition to this he is an Honorary Associate Professor at University College London, allowing him to pursue his interest in research and undergraduate/postgraduate education. Dr Rahman qualified from the Royal Free School of Medicine in 1997. Subsequently, he completed his Gastroenterology specialist training on the North East London Rotation and went on to obtain a PhD from UCL investigating the immuno-pathogenesis of inflammatory bowel disease.

Dr Farooq Rahman is a luminal Gastroenterologist, that is, a gastroenterologist concerned with conditions affecting the lining of the GI tract (e.g. gastric ulcers, coeliac disease, etc.). His interests include inflammatory bowel disease, clinical nutrition & intestinal failure, and endoscopy. In addition to this, he is regularly consulted by patients suffering from irritable bowel syndrome, bile acid malabsorption, and radiation enteropathy as well as a whole host of other conditions.

As well as Dr Rahman’s clinical and teaching responsibilities, he is committed to furthering the field of gastroenterology through conducting research into conditions such as Crohn’s disease and ulcerative colitis (inflammatory bowel diseases) and intestinal failure, which has lead to many high impact peer-reviewed publications in renowned scientific journals, such as The Lancet, Gut, Journal of Experimental Medicine, Journal of Crohn's & Colitis and Inflammatory bowel disease.

This combination of education, research and clinical practice ensures Dr Rahman has the skills to provide the highest level of treatment and an excellent standard of care to his patients.

Said Mohamed is a Consultant Laparoscopic Colorectal and General Surgeon, with expertise in treating colorectal cancer and inflammatory bowel disease as well as benign colorectal conditions such as haemorrhoids, anal fissure and anal fistulae. 

Mr Mohamed qualified in medicine from The Queen’s College, University of Oxford and completed his surgical training at the London Postgraduate Deanery. He obtained further advanced training in colorectal surgery at the University College Hospital and Guy’s and St Thomas’ Hospital.

Mr. Mohamed is an advanced endoscopist and specialises in the treatment of large colorectal polyps and early rectal cancer. He is an accredited Bowel Scope screening endoscopist and is the Endoscopy Lead for training at the Croydon University Hospital NHS Trust. In addition to his colorectal expertise, he specialises in repairs of all types of abdominal wall herniae including abdominal wall reconstruction and component separation for large incisional herniae.

 Should you require a short notice appointment please contact Emma on 07501 113244

Mr Stephen Warren is a Consultant General, Colorectal & Laparoscopic Surgeon based in London, UK. Following his graduation from University of London in 1986 he soon discovered an interest in laparoscopic surgery, finding that patients experienced less pain compared to traditional methods and also recovered quicker with fewer complications. By 1991 he had performed his first laparoscopic cholecystectomy and as a young consultant was awarded a national scholarship to gain experience at the renowned Cleveland Clinic in USA for a 3 month sabbatical.

He was the recipient of a Master of Surgery MS in Surgery for his published thesis from the University of London.

He has a specialist interest in all abdominal and bowel complaints. He is a highly skilled laparoscopic surgeon and applies his skills to a wide variety of surgical operations, both elective planned and emergencies.

In his personal time he enjoys oil painting, road cycling, and football.

Diseases, Medical Tests and Treatments

His usual patients are referred with:

• Laparoscopic groin, umbilical and incisional hernias
• Gallstones and jaundice
• Bowel cancers and screening
• Laparoscopic bowel cancer resection
• Rectal bleeding and piles
• Change in bowel habit, diarrhoea and constipation
• Abdominal and pelvic pain, irritable bowel syndrome
• For the investigation of anaemia and positive blood in stool tests
• Stomach problems, indigestion and ulcers
• For colonoscopy or gastroscopy, family/personal history of polyps or bowel tumours
• Emergencies: appendicitis, abscesses, diverticulitis and abdominal pain
• Anal and rectal pain, prolapse, fistulas, fissures and painful piles
• Pilonidal sinus
• Laparoscopic treatment of diverticulitis, colovesical fistulas
• Laparoscopic treatment of complicated Crohn’s disease
• Laparoscopic treatment of complicated colitis
• Colostomy and ileostomy problems
• Anal pain and bleeding in children
• Excision of skin lesions
• Lipomas
• Advanced laparoscopic (keyhole) surgery
• Bowel and rectal surgery