topdoctors logo
SpecialtiesConditionsClinicsDentists
Area for professionals

Book online now

Aathavan Loganayagam profile image
Dr Aathavan LoganayagamGastroenterology in Central London
  • Home
  • Doctors
  • Gastroenterology
  • Gastroenterologists in Central London
  • Dr Aathavan Loganayagam

Dr Aathavan Loganayagam

Gastroenterology in Central London, South London and East London

MB BS BSc MRCP
GMC: 4742373

5.0937reviewsReview

Expert in:
Bowel cancer
Endoscopy
Indigestion (dyspepsia)
Inflammatory bowel disease (IBD)
Irritable bowel syndrome (IBS)
Colonoscopy
Liver disease
  • Information
  • CV
  • Reviews
  • Treatments
  • Content

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
  • The Blackheath Hospital - In clinic consultations only - part of Circle Health Group profile image

    The Blackheath Hospital - In clinic consultations only - part of Circle Health Group

    Central London, 40-42 Lee Terrace, Blackheath, London SE3 9UD, UK

    Medical insurances accepted

    I'm paying for myself
    Bupa
    AXA
    AVIVA
    Cigna
    WPA
    Vitality

Credentials

Professional experience

  • 26 years of experience
  • Lead Clinician for Endoscopy, Queen Elizabeth Hospital, Lewisham and Greenwich NHS Trust, Woolwich (present)
  • Consultant Gastroenterologist, BMI The Blackheath Hospital (present)
  • Consultant Gastroenterologist, BMI Shirely Oaks Hospital (present)
  • Consultant Gastroenterologist, LycaHealth Orpington (present)
  • Consultant Gastroenterologist, LycaHealth Canary Wharf (present)
  • Consultant Gastroenterologist, Orpington Endoscopy Solutions (present)
  • JAG Accredited endoscopist
View more

Subspecialties

  • Endoscopy
  • Colonoscopy
  • Irritable Bowel Syndrome (IBS)
  • Inflammatory Bowel Disease (IBD)
  • Dyspepsia
  • Cancer Screening
  • Liver Diseases
  • Abdominal pain
  • Alcoholism
  • Barrett's oesophagus
  • Biopsy
  • Bloated stomach
  • Bowel incontinence
  • Capsule endoscopy
  • Cholelithiasis (gallstones)
  • Chronic diarrhoea
  • Cirrhosis
  • Coeliac
  • Colic
  • Colitis
  • Colon cancer
  • Colorectal cancer
  • Constipation
  • Crohn's disease
  • Diverticulitis
  • Dysphagia
  • Enteroscopy
  • Esophageal manometry
  • Fatty liver
  • Food intolerance
  • Food intolerance test
  • Gastric reflux
  • Gastric ulcer
  • Gastrointestinal bleeding
  • Gastrointestinal endoscopy
  • Gastroscopy
  • Halitosis
  • Helicobacter pylori
  • Hiatal hernia
  • Indigestion (dyspepsia)
  • Lactose intolerance
  • Lactose intolerance test
  • Liver biopsy
  • Haemorrhoids
  • Liver cancer
  • Liver cyst
  • Liver function tests
  • Malnutrition
  • Oesophageal varices
  • Oesophagitis
  • Pancreatic cancer
  • Pancreatitis
  • pH monitoring
  • Polypectomy
  • Polyps
  • Rectal cancer
  • Rectosigmoidoscopy
  • Second medical opinion
  • Short bowel syndrome
  • Stomach cancer
  • Viral Hepatitis
  • Stomach flu
  • Change in or altered bowel habit
  • Weight loss
  • Swallowing problems
  • Ulcerative colitis
  • Jaundice
  • Oesophageal cancer
  • Anaemia
  • Iron deficiency
  • Loose stools
  • Alcoholic liver disease
  • Bacterial overgrowth
  • Food allergy
  • FODMAP diet
  • APC
  • Nausea
  • Vomiting
  • Bravo pH study
  • Oesophageal manometry
  • Functional bowel disease
  • Non ulcer dyspepsia
  • Peptic ulcer
  • Diagnosis and screening or surveillance of gastrointestinal cancers
  • Bowel cancer screening
  • Rectal bleeding
  • Gastroesophageal reflux disease
  • Nutrition
  • Diet
  • General gastroenterology
  • Liver failure
View more

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)
  • Guy’s, King’s & St Thomas’ School of Medicine, King’s College London (MBBS) (2000)
  • King’s College London (BSc) (1997)
View more

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.
  • The role of faecal calprotectin in the differentiation of organic from functional bowel disorders. Tavabie OD, Hughes SA, Loganayagam A. Br J Gen Pract. 2014 Nov;64(628):595-6. doi: 10.3399/bjgp14X682525.
  • Pharmacogenetic variants in the DPYD, TYMS, CDA and MTHFR genes are clinically significant predictors of fluoropyrimidine toxicity. Loganayagam A, Arenas Hernandez M, Corrigan A, Fairbanks L, Lewis CM, Harper P, Maisey N, Ross P, Sanderson JD, Marinaki AM. Br J Cancer. 2013 Jun 25;108(12):2505-15. doi: 10.1038/bjc.2013.262.
  • Cerebral air embolism: a rare complication following balloon dilation. Pee L, Basu S, Loganayagam A. Endoscopy. 2013;45 Suppl 2 UCTN:E93-4. doi: 10.1055/s-0032-1326251
  • Autoimmune haemolytic anaemia in ulcerative colitis. Sebepos-Rogers G, Gera A, Loganayagam A. Br J Hosp Med (Lond). 2012 Sep;73(9):532-3
  • A case of optic neuritis and transverse myelitis in a postpartum Ghanaian female. Srikugan L, Loganayagam A, Kelleher K. J Hosp Med. 2010 Mar;5(3):E12-3. doi: 10.1002/jhm.398
  • The contribution of deleterious DPYD gene sequence variants to fluoropyrimidine toxicity in British cancer patients. Loganayagam A, Arenas-Hernandez M, Fairbanks L, Ross P, Sanderson JD, Marinaki AM. Cancer Chemother Pharmacol. 2010 Jan;65(2):403-6. doi: 10.1007/s00280-009-1147-x
  • Midazolam with meperidine or fentanyl for colonoscopy: results of a randomized trial. Hayee B, Dunn J, Loganayagam A, Wong M, Saxena V, Rowbotham D, McNair A. Gastrointest Endosc. 2009 Mar;69(3 Pt 2):681-7. doi: 10.1016/j.gie.2008.09.033
  • An unusual cause of nausea and altered bowel habit. Loganayagam A, McNair A. Br J Hosp Med (Lond). 2008 Feb;69(2):107
  • Management of pyrexia of unknown origin. Srikugan L, Loganayagam A. Br J Hosp Med (Lond). 2007 Dec;68(12):M212-4
  • Overprescribing proton pump inhibitors. Forgacs I, Loganayagam A. BMJ. 2008 Jan 5;336(7634):2-3. doi: 10.1136/bmj.39406.449456.BE
  • Faecal screening of colorectal cancer. Loganayagam A. Int J Clin Pract. 2008 Mar;62(3):454-9
  • Efficacy, safety and drug survival of thioguanine as maintenance treatment for inflammatory bowel disease: a retrospective multi-centre study in the United Kingdom Ahmed B. Bayoumy, Elsa L. S. A. van Liere, Melek Simsek, Ben Warner, Aathavan Loganayagam, Jeremy D. Sanderson, Simon Anderson, Jonathan Nolan, Nanne K. de Boer, Chris J. J. Mulder & Azhar Ansari BMC Gastroenterology volume 20, Article number: 296 (2020)
View more

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)
  • Awarded research fellowship by Purine Metabolic Patients’ Association (PUMPA) (2008)
  • Awarded research fellowship by CANHELP Charity Research Fellowship, Guy’s and St Thomas’ Charity (2008)
  • Winner in open competition, for the development of pre-treatment testing for patients about to start chemotherapy to predict efficacy and toxicity, of the NHS Innovation London Award (2008)
  • 2012-2020- Level 5 NHS Clinical Excellence Award
View more

Languages spoken

  • English
  • Tamil
Registration number: 4742373

Reviews

All reviews are from real patients and have been verified by our Customer Service department to ensure they meet our guidelines. Rules of the service

937 reviews

5.0

Review this doctor
  • 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.
    28 May 2026

    L.S.

    Verified patient
  • 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.
    26 May 2026

    Y.K.

    Verified patient
  • 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.
    19 May 2026

    S.V.

    Verified patient
  • 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.
    18 May 2026

    M.C.

    Verified patient
  • 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.
    16 May 2026

    C.T.

    Verified patient
  • 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.
    16 May 2026

    L.L.

    Verified patient
  • 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.
    12 May 2026

    M.C.

    Verified patient
  • 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.
    12 May 2026

    R.L.

    Verified patient
  • 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.
    1 May 2026

    H.S.

    Verified patient
  • 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.
    28 April 2026

    F.S.

    Verified patient
View all reviews

Treatments

The doctor is expert in

Bowel cancer

Colonoscopy

Endoscopy

Indigestion (dyspepsia)

Inflammatory bowel disease (IBD)

Irritable bowel syndrome (IBS)

Liver disease

The doctor also specialises in:

Abdominal pain

Abdominal ultrasound

Achalasia

Acid reflux

Alcoholic liver disease

Alcoholism

Anal fissure

Ascites

Autoimmune hepatitis

Barrett's oesophagus

Frequently Asked Questions

What is Dr Aathavan Loganayagam's specialty?

Dr Aathavan Loganayagam is a consultant specialising in Gastroenterology, with extensive experience in assessing and treating patients within this field.

Which conditions and treatments does Dr Aathavan Loganayagam specialise in?

Dr Aathavan Loganayagam is a gastroenterologist who provides assessment and treatment for Bowel cancer, Endoscopy, Indigestion (dyspepsia), Inflammatory bowel disease (IBD), Irritable bowel syndrome (IBS), Colonoscopy and Liver disease. During your consultation, you will be informed of the most suitable options following a personalised evaluation.

How many years of experience does Dr Aathavan Loganayagam have?

Dr Aathavan Loganayagam has 26 years of professional experience as a consultant gastroenterologist, providing specialist assessment and treatment in this medical field.

What do patients say about Dr Aathavan Loganayagam?

Patients give a rating of 5.0 out of 5 to Dr Aathavan Loganayagam, a score considered excellent. This average is based on 937 verified patient reviews, reflecting the experience of those who have attended an appointment.

Are Dr Aathavan Loganayagam's reviews verified?

Yes. All Dr Aathavan Loganayagam's reviews come from verified patients who have attended either an in-person or an e-Consultation appointment. We use a system that ensures authenticity and prevents fake reviews. Some profiles may also display reviews from other platforms, which follow their own verification policies, with the source always clearly indicated.

Where does Dr Aathavan Loganayagam practise?

Dr Aathavan Loganayagam practices in the following locations:

  • Central London at 40-42 Lee Terrace, Blackheath, London SE3 9UD, UK
  • Central London at HCA Healthcare UK, The Shard, 32 St Thomas St, London SE1 9BS, UK
  • Central London at Level 1, 40 Bank St, Canary Wharf Estate, London E14 5NR, UK
  • South London at Crayfields Business Park, 3 New Mill Rd, Orpington BR5 3TW, UK
  • Central London at 1 Westferry Circus, Canary Wharf Estate, London E14 4HD, UK

In-person consultations are available at these locations as a Gastroenterology.

How can I book an appointment with Dr Aathavan Loganayagam?

You can book an appointment with Dr Aathavan Loganayagam directly from this page by selecting the time that suits you best. Alternatively, you can call the phone number shown if you prefer personalised assistance.

Does Dr Aathavan Loganayagam see NHS patients?

Many specialists featured on Top Doctors also hold NHS positions. However, appointments arranged for Dr Aathavan Loganayagam through this platform are private, either self-pay or covered by private medical insurance.

Does Dr Aathavan Loganayagam offer private appointments?

Yes, Dr Aathavan Loganayagam offers private appointments for patients seeking flexible and direct access to a consultant gastroenterologist.

Does Dr Aathavan Loganayagam offer online consultations?

Yes, Dr Aathavan Loganayagam offers online consultations. You can book an appointment directly from this page by selecting the date and time that suit you best. Personalised assistance is also available by calling the number displayed on this page.

Does Dr Aathavan Loganayagam accept insurance?

Dr Aathavan Loganayagam works with the following private medical insurance providers: Bupa, AXA, AVIVA, Cigna, WPA and Vitality. If your insurer is not listed, you may contact the practice directly to confirm your coverage.

What is Dr Aathavan Loganayagam's availability?

Dr Aathavan Loganayagam's availability depends on the appointment slots open at any given time. On this page, you can check current availability, and if no slots are shown, you can request an appointment or contact the practice directly.

What payment methods does Dr Aathavan Loganayagam offer?

You can pay for your consultation with Dr Aathavan Loganayagam using the following methods: Self-paying.

What languages does Dr Aathavan Loganayagam speak?

Dr Aathavan Loganayagam is a gastroenterologist who offers consultations in English and Tamil.

How is Dr Aathavan Loganayagam selected to appear on this platform?

All doctors listed on Top Doctors, including Dr Aathavan Loganayagam, undergo our rigorous selection process. Only one in five specialists meets the required standards to be included.
Discover Top Doctors' rigorous medical selection process.
The doctor, or where applicable the hospital or medical centre in which the doctor provides services, undertakes to keep the information relating to the prices of services published on their profile on the Top Doctors platform up to date at all times, ensuring that such prices correspond to those effectively charged to patients. In the event of any discrepancy between the published price and the price ultimately charged to the patient, the doctor and/or the relevant hospital or medical centre shall be solely liable towards the patient and towards Top Doctors for any claim or financial difference arising therefrom.

Request now: The appointment management service is free

Appointment confirmed instantly

The Blackheath Hospital - In clinic consultations only - part of Circle Health GroupCentral London, 40-42 Lee Terrace, Blackheath, London SE3 9UD, UK
Payment methodSelf-paying

Important: Dr Loganayagam is offering face to face consultations (with the option of telephone consultations).

  • About us
  • About Top Doctors
  • Why choose us?
  • Quality commitment
  • Selection process
  • Medical Specialist Advisory Panel
  • Privacy policy
  • Terms of Use
  • Cookies policy
  • Policy on the use of third party applications
  • Collaborate with us
  • Doctors
  • Our Clinics
  • Strategic alliances
  • Join us
  • Top Doctors Awards
  • Nominate doctors
  • Customer services
  • Doctors by medical insurance
  • Contact us
  • FAQs
  • All medical procedures
  • Press and media
  • Press
  • Medical articles

Contact
  • Doctors
  • Member
  • Patients
Social networks
CertificatesComodo Secure
Privacy policy and Terms of Use

Top Doctors | 20-22 Wenlock Road, London, England, N1 7GU