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The London Clinic


  • Gastroenterology

Sub specialties

  • Interventional endoscopy
  • Hepatopancreaticobiliary medicine
  • Inflammatory bowel disease
  • Gastrointestinal cancer

Clinical interests

  • Chronic diarrhoea
  • Complex functional bowel disorders
  • Iron deficiency anaemia
  • Novel endoscopic imaging

Professional profile

Dr Thillainayagam did his higher medical training in the London Region (St Bartholomew's Hospital & St Mark's Hospital) and Oxford Region (John Radcliffe Hospital & Royal Berkshire Hospital).
His doctoral research was into the fluid therapy of acute infectious diarrhoea (MD 1995).show more
m his post as a Senior Registrar in Oxford he was appointed consultant & honorary senior lecturer in medicine to Hammersmith Hospitals NHS Trust and the Royal Postgraduate Medical School (now part of The Faculty of Medicine, Imperial College, University of London) in 1996.
This is now Imperial College Healthcare, the largest Trust in the UK, and the first Academic Health Sciences Centre in the UK.
He is one of the lead interventional endoscopists in the Trust, was clinical lead for Medicine on the clinical effectiveness committee of Hammersmith Hospitals Trust, leads an undergraduate teaching firm, and was very involved in co-ordinating the GI curriculum for the Faculty of Medicine of Imperial College (University of London).
Dr Thillainayagam has also been the lead clinician for cancer of the upper GI tract for the Cancer Services Collaborative (West London Cancer Network), as well as for Hammersmith Hospitals NHS Trust.
He is on the Clinical Services Committee of the BSG and is chairman of the NW Thames Gastroenterology Group.
His specialist clinical interest and expertise lie in therapeutic endoscopy, malignant disease of the digestive system, hepatopancreaticobiliary medicine, and inflammatory bowel disease.
His current research interests include cholangiocarcinoma, novel endoscopic imaging, iron deficiency anaemia, the palliation of GI cancer and bile salt malabsorption.
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Personal profile

He likes fly fishing, theatre, music andsport.
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Current posts

  • Consultant Physician and Honorary Senior Lecturer
    Imperial College Healthcare

Medical training

Year qualified
  • Manchester Medical School
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Clinic location

116 Harley Street
London W1G 7JL
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Clinic times

Tuesday: 4pm onwards
Thursday: 3pm onwards
Saturday: Mornings ad hoc

Appointment enquiries: +44 (0) 20 3944 1073 Concierge service: +44 (0) 203 219 3323 Self-Pay service: +44 (0) 203 918 7301International office: +44 (0) 203 219 3266 Invoice and payment enquiries: +44 (0) 207 616 7708 General enquiries: +44 (0) 20 3918 9135

Breast services appointments: +44 (0) 207 616 7653 Diagnostics appointments: +44 (0) 207 616 7653 Endoscopy appointments: +44 (0) 207 616 7760 Eye centre appointments: +44 (0) 207 616 7768 Haematology appointments: +44 (0) 207 535 5503 Kidney services appointments: +44 (0) 207 224 5234 Liver services appointments: +44 (0) 207 616 7719 Physiotherapy appointments: +44 (0) 207 616 7651 Radiology appointments: +44 (0) 207 616 7653

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