
Dr Aathavan Loganayagam
Professional statement
Dr Aathavan Loganayagam is a premier consultant gastroenterologist serving the south London community. His clinical practice is dedicated to providing rapid, accurate diagnoses and evidence-based treatment plans for a comprehensive range of digestive health conditions.
Dr Loganayagam specialises in the management of complex inflammatory bowel fisease (IBD), including Crohn’s disease and ulcerative colitis, as well as irritable bowel syndrome (IBS), acid reflux (GORD/GERD), and coeliac disease. He is a leading specialist for patients seeking relief from symptoms such as:
- Persistent abdominal pain and bloating
- Chronic indigestion and heartburn
- Diarrhoea, constipation, or rectal bleeding
- Unexplained changes in bowel habits
As a JAG accredited endoscopist, Dr Loganayagam maintains the highest national standards for procedural safety, quality, and patient comfort. He currently serves as the lead clinician for Endoscopy at Queen Elizabeth Hospital, Woolwich (part of Lewisham and Greenwich NHS Trust).
He offers expert diagnostic and therapeutic procedures, including:
- Gastroscopy (Upper GI Endoscopy)
- Colonoscopy and sigmoidoscopy (including advanced polypectomy)
- Video capsule endoscopy (Pill camera)
To ensure the best possible patient experience, Dr Loganayagam offers a personalized approach to procedures, providing a choice of local anaesthetic, conscious (mild) sedation, or deep sedation based on patient preference and clinical suitability.
Dr Loganayagam trained at the world-renowned Guy's, King's and St. Thomas' medical schools and completed his advanced specialty training within the south London gastroenterology programme.
His significant contributions to the field of personalised medicine and IBD research at Guy's and St Thomas' Hospitals have been recognised with multiple grants and the prestigious NHS Innovation London Award. This research background allows him to utilise the most modern, novel therapeutic agents for patients with complex gastrointestinal conditions.
Beyond his clinical practice, Dr Loganayagam is a respected medical educator and examiner. He is deeply involved in:
- Training and examining: Mentoring medical students and post-graduate doctors.
- MRCP examinations: Contributing to the quality assurance of examinations for the Royal College of Physicians (UK).
- International standards: Writing for the European specialty examination in gastroenterology and hepatology.
Dr Loganayagam is an approachable consultant who believes that clear communication and empathy are the cornerstones of outstanding medical care. He is committed to ensuring every patient feels fully informed, listened to, and actively involved in all decisions regarding their digestive health journey.
Clinics

The Blackheath Hospital - In clinic consultations only - part of Circle Health Group
Central London, 40-42 Lee Terrace, Blackheath, London SE3 9UD, UKMedical insurances accepted
Credentials
Professional experience
- 26 years of experience
- Lead Clinician for Endoscopy, Queen Elizabeth Hospital, Lewisham and Greenwich NHS Trust, Woolwich (present)
Subspecialties
- Endoscopy
- Colonoscopy
Professional memberships
- Member of British Medical Association
- Member of British Society of Gastroenterology
Education
- Clinical Fellow in inflammatory bowel disease, Guy’s and St Thomas’ Hospitals, London (2008)
- Clinical Fellow in endoscopy, Guy’s and St Thomas’ Hospitals, London (2007)
Teaching posts
- Runs teaching sessions for GPs and patients
- Undertakes regular postgrauduate and undergraduate teaching in the areas of gastroenterology and endoscopy at Lewisham and Greeenwich NHS Trust
Positions in organisations
- Member of the Royal College of Physicians (MRCP) (2003)
- Member of the South East London Inflammatory Bowel Disease pathway development group (2015 - present)
Publications and conferences
- Numerous publications in peer reviewed journals on all aspects of gastroenterology.
- Autoimmune haemolytic anaemia is a rare association with primary biliary cirrhosis. Meade S, Kotha S, Gera A, Loganayagam A. Br J Hosp Med (Lond). 2016 Jun;77(6):370-1. doi: 10.12968/hmed.2016.77.6.370.
Prizes and awards
- Selected by the Gastro Scientific Committee for the best ten abstracts from a total of 2188 and awarded a travel grant to attend Gastro UEGW/WCOG, London (2009)
- Awarded the British Society of Gastroenterology Travelling Fellowship to attend the Annual Advanced Endoscopy Update Charleston, South Caroline, USA (2009)
Languages spoken
- English
- Tamil
Reviews
- Would you recommend this doctor?
- Treatment of the doctor
- Treatment of the staff
- Waiting time
- Condition of facilities
- For six grueling months, I suffered from debilitating symptoms that multiple NHS and private gastroenterologists completely failed to diagnose. Remarkably, spending just 20 minutes with Dr Loganayagam was all it took for him to accurately pinpoint the issue. He prescribed a targeted medication regimen that has dramatically improved my condition and quality of life.
- Dr. Loganayagam is an exceptional specialist. He is extremely polite, kind, and truly relatable, making me feel heard and understood throughout the consultation. He was incredibly thorough in his examinations and diagnostic inquiries, leaving no stone unturned. Furthermore, he provides speedy responses, which reduces anxiety when waiting for a treatment plan. He developed a very credible, clear plan for my recovery, and I highly recommend him.
- Dr Loganayagam is a very lovely man who consistently remains exceptionally polite and deeply understanding. Overall, it was an absolute pleasure to be treated by him.
- Dr. Loganayagam is absolutely amazing. His unwavering professionalism and deep medical expertise are truly outstanding. He completely put my mind at ease and expertly assessed my complex medical problem immediately. He is a doctor who genuinely listens to you, and I would highly recommend him.
- I am incredibly happy that I chose to proceed with Dr. Loganayagam for my care. He expertly addressed all of my underlying fears regarding my acid reflux. Following the endoscopy he performed, he explained in exceptionally high detail exactly what was going on and provided a clear, actionable plan on how to fix it.
- Dr Loganayagam is very kind and remarkably understanding. He took the time to explain both my procedures and my results in a deeply sensitive and highly reassuring manner. Furthermore, my colonoscopy was entirely painless.
- I am incredibly happy that I chose to proceed with Dr. Loganayagam for my care. He expertly addressed all of my underlying fears regarding my acid reflux. Following the endoscopy he performed, he explained in exceptionally high detail exactly what was going on and provided a clear, actionable plan on how to fix it.
- Dr Loganayagam is very kind and remarkably understanding. He took the time to explain both my procedures and my results in a deeply sensitive and highly reassuring manner. Furthermore, my colonoscopy was entirely painless.
- I would thoroughly recommend Dr Loganayagam, as he is understanding and will take the time to provide a holistic approach. The advice, procedure, and overall guidance that Dr Loganayagam has given me have been life-changing, and I look forward to a far healthier life thanks to his expert knowledge and experience. I can’t thank Dr Loganayagam enough; he sorted my problems with ease through a very professional process, and I’m back to feeling like a million dollars. A big thank you from me.
- I had the immense pleasure to meet Dr. Loganayagam at Blackheath Hospital recently. He is an absolutely amazing, deeply reassuring, and undeniably one of the absolute kindest doctors I’ve ever seen. Thank you.