Dr Tom Marrs is Consultant Paediatrician specialising in Allergy and Clinical Immunology, with nearly two decades of experience in the treatment of children's allergies. Dr Marrs leads the Allergy Prevention Service at Guy's and St. Thomas' Hospital and the Joint Allergy-Gastroenterology Service at Evelina London. He was the Scientific Programme Lead for the British Society of Allery and Clinical Immunology from 2018-2020. Dr Marrs sees private patients at OneWelbeck Marylebone, Spire St Anthony's Hospital in Cheam and the New Malden Diagnostic Clinic.
Dr Marrs graduated from Clare College, Cambridge University, in Medicine, Medical Ethics and Law. He completed his primary medical qualification in 2003 from St Barts and the Royal London Hospital, after taking specialist study at the Astrid Lindgren's Children's Hospital, Karolinska Hospital, as well as studying in Sri Lanka and Nepal. Dr Marrs then undertook his specialist paediatrics training at various renowned London hospitals including the Royal Brompton, Great Ormond Street and Guy's Hospital. Since completing his training, Dr Marrs was awarded his PhD in eczema, food allergy and the prevention of food allergies, and has been appointed Director of the Allergy Academy, King's College London, where he is also a Senior Honorary Lecturer with Adjunct.
Areas of expertise
Based on patient reviews & endorsements by other professionals
All conditions and treatments
General Medical Council
Society of Allergy and Clinical Immunology (BSACI)
European Academy of Allergy and Clinical Immunology
Royal College of Paediatrics and Child Health
British Society of Allergy and Clinical Immunology
Specialist's working hours
at All locations
15:00 - 18:00
12:30 - 15:00
14:00 - 17:00
Dr. Tom is very friendly and accomodating. No issues with our tests and all was explained thoroughly in advance. Also he responded promptly to my enquiries.
We were really pleased with our review with Dr Marrs. He was empathetic, holistic and thorough in the assessment and management of our daughter. We received prompt communication at all times and following our appointment we were emailed a very clear management plan going forward. We would highly recommend Dr Marrs to all parents who are concerned their child may have an allergy.
He was good at explaining my son’s skin conditions and they were interacting well, so it was very good experience
Dr Tom was amazing with my 3.5 year old daughter and with me and my Dad! A brilliant experience on what was a long and tricky day.
He was really patient with my son who is super shy! He explained everything very clearly and for my son to understand.
Fantastic with my 2 year old
Very efficient and thorough. Allergy testing for a 10 month old
I think Dr Marrs was a true splendour and is the best doctor I’ve ever met! When I was scared to ever eat certain nuts or have a skin prick he reassured me and made fun jokes to take my mind off it. Whilst chatting with him I learnt new and fascinating facts about my peanut allergy. I cannot rate him highly enough! By Eva D age 9
We got all our answers and we had a really good experience
Very pleasant and very knowledgeable.
Have you worked with this specialist?
I have known and worked with Dr Marrs for many years. He is an experienced and highly competent Paediatrician. He has a great deal of expertise in allergy and he uses his skills not only for clinical care but also for teaching and promoting excellence within the field. I wholeheartedly recommend him and trust his opinion.
Dr Jenny Epstein
Dr Marrs is an exceptional paediatric allergist and wonderful colleague. He is incredibly dedicated to his patients and their families, providing each individual with comprehensive and personalised care. His vast clinical experience is underpinned by his academic research work, where he has published widely in the field of paediatric allergy. Dr Marrs is so personable and excellent; I highly recommend his expert care.
Dr. Danielle Greenblatt
What are Dr. Tom Marrs's reviews like?
Dr. Tom Marrs's overall patient rating is 4.96 out of 5 stars on Doctify. This is based on 99 reviews
Where is Dr. Tom Marrs located?
Dr. Tom Marrs primarily practices at OneWelbeck Dermatology, located at 1 Welbeck Street, Marylebone, United Kingdom, W1G 0AR
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What are Dr. Tom Marrs working hours?
Dr. Tom Marrs is working Tuesday (15:00 - 18:00, 12:30 - 15:00), Wednesday (14:00 - 17:00)
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Does Dr. Tom Marrs accept new patients?
Dr. Tom Marrs generally accepts new patients.
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