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Dr Tom Marrs

Dr Tom Marrs

Consultant Paediatric Allergist

Food immunotherapyChallenge testingSub-lingual immunotherapy
AboutOverviewPrices & InsurersTreatmentsFAQs

About Tom Marrs

Dr Tom Marrs, Consultant Paediatric Allergist, treats children across the spectrum of allergic disease, from eczema to food allergy, asthma and hay fever, through designing specialist diagnostic and treatment pathways.

Dr Marrs leads the St Thomas’ Evelina Allergy Research CRF Unit, the Allergy Prevention Service and Joint Allergy-Gastroenterology Service at Evelina London. He chairs the Paediatric Specialist Committee of the British Society of Allergy (BSACI) and is Chief Investigator across both commercial immunotherapy research and allergy prevention academic studies for NIHR. He graduated from Clare College, Cambridge University, training across Great Ormond Street and the Royal Brompton Intensive Care Unit.

Dr Marrs was awarded his PhD from King’s College London in eczema, food allergy and early treatment strategies. Dr Marrs has been appointed Director of the Allergy Academy, King’s College London, where he is also a Senior Honorary Lecturer.

Expertise

  • Food immunotherapy
  • Challenge testing
  • Sub-lingual immunotherapy
  • IgE-Mediated Food Allergy
  • Anaphylaxis
  • Eczema
  • Risk mitigation
  • Food Challenge diagnosis
  • Dietary advancement therapy
  • Food Allergy Prevention
  • Formal asthma diagnosis
  • Environmental allergen immunotherapy
  • Shared-decision making
  • Atopic Dermatitis
  • Allergic Rhinitis
  • Asthma
  • Drug allergy
  • Pollen food syndrome
  • Chronic urticaria
  • Eosinophilic Oesophagitis
  • Blood and Component Allergy Testing
  • Skin Prick Testing
  • Next-Generation Array Blood Testing
  • Antibiotic Challenges
  • Venom allergy

Overview

Age of patients seen
0-17
Qualifications

MBBS(Lond) MA(Cantab) MSc MRCPCH HFEA PhD

Languages spoken
English
Online profiles

Consultations and services

  • Self-pay available from £315
  • Health insurance
  • 40 mins consultation

  • Self-pay available from £250
  • Health insurance
  • 40 mins consultation

Insurers covered

  • WPA
  • Aviva
  • Vitality Health
  • BUPA Limited
  • AXA Health

Tests & treatments

Locations

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London

1 Welbeck Street
Marylebone
London
W1G 0AR

More information

Frequently asked questions

Yes, but only for certain services. Some consultations, assessments, and treatments can be booked directly, while others require a GP or specialist referral. Please check the relevant service page for guidance, and contact the centre if you’re unsure.


We aim to offer appointments as quickly as possible, and many services have same-day or next-day availability. Waiting times vary depending on the appointment type, specialty, and consultant availability, but our team will always offer the earliest suitable appointment.


Yes. You can arrange an appointment for a family member, or someone you care for, just let us know when you get in touch. We’ll need their details and consent to complete the booking, unless you're their legal guardian or have power of attorney.  


Your first consultation includes a detailed discussion of your symptoms, medical history, and lifestyle factors, followed by a thorough examination. It’s helpful if you can bring the results of any previous investigations with you, as well as a list of your current medications. Come with a comfortably full bladder so you can provide a urine sample if requested.


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