UKallergy.com – Expert Allergy Consultations & Testing for Adults and Children The UKallergy London Allergy & Immunology Centre and Great British Allergy Clinic provide comprehensive private allergy care, from diagnosis to personalised treatment plans.
If you need any help please contact our friendly customer service support team by email or call 020 3143 3449 and they will help to book an appointment.
London’s Leading Private Allergy Clinic — Expert Testing & Treatment for Adults & Children
The UKallergy London Allergy & Immunology Centre and Great British Allergy Clinic offer consultant-led allergy care — from advanced molecular diagnosis to evidence-based immunotherapy — in clinic on Harley Street or remotely across the whole of the UK.
⚡ Need an urgent appointment?
We will do our very best to arrange a same-day video consultation. Please register as a new patient first to save time — it takes only a few minutes online.
Face-to-face at Harley Street • Same-day video • UK-wide postal testing kits
✓Consultant-led care ✓ALEX³ molecular testing ✓Oral immunotherapy (OIT) ✓Adults & children ✓Same-day video available ✓UK-wide postal kits ✓Global Allergy Network partner
How We Help
Comprehensive Allergy Care Under One Roof
Our patient-centred approach combines detailed clinical history, advanced diagnostics and the latest evidence-based treatments to build effective, individualised management plans for every patient.
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Face to face and Nationwide Remote Care with Consultants
Harley Street, South London, West London or secure same-day video with our specialists in allergy and immunology and paediatric consultants.
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Advanced Allergy Testing including Nationwide postal service
Skin prick tests, patch tests and over 600 specific IgE blood tests. Now including the ALEX³ panel — 300 allergens & molecular components in one blood sample, testing kits sent anywhere in England, Scotland, Wales and Northern Ireland. Results reviewed by your consultant via video — no clinic visit required.
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Allergen Immunotherapy
Sublingual immunotherapy (SLIT) for pollen, dust mites, mould, pets and oral food immunotherapy (OIT) for peanut, milk and egg allergy, aligned with current EAACI and BSACI guidelines.
International Accreditation
First UK Clinic Accredited as Both a UCARE & ACARE Centre of Excellence
The London Allergy & Immunology Centre has held both accreditations since November 2017, making it the first clinic in the United Kingdom to achieve UCARE accreditation followed by ACARE acceditation.
UC
UCARE
Urticaria Centre of Reference & Excellence
UCARE is a global accreditation programme run by GA²LEN (the Global Allergy and Asthma European Network). It recognises specialist centres that provide the highest standards of care for patients with chronic urticaria (hives) and angioedema.
To achieve UCARE status, a centre must satisfy 32 stringent criteria assessed during a formal independent audit, covering clinical protocols, diagnostic standards, patient monitoring tools, research activity and education. Certification is renewed every 2–4 years.
✓ Expert diagnosis & classification of all urticaria subtypes — chronic spontaneous (CSU) and chronic inducible urticaria
✓ Validated patient-reported outcome tools: Urticaria Activity Score (UAS7), Urticaria Control Test (UCT) and CU-Q2oL quality of life score
✓ Access to biological therapy including omalizumab (anti-IgE) for antihistamine-resistant chronic spontaneous urticaria
✓ Active contributor to the international UCARE network and the EAACI/GA²LEN/EuroGuiDerm urticaria guidelines (2022)
✓ All ages treated — adults, teenagers and children
Accredited by GA²LEN • Since November 2017
AC
ACARE
Angioedema Centre of Reference & Excellence
ACARE is the companion accreditation to UCARE, also operating under the GA²LEN framework. It recognises centres of excellence in the diagnosis and management of angioedema — sudden deep swelling of the skin, lips, throat and digestive tract that can be life-threatening when the airway is involved.
Angioedema has multiple causes — allergic, hereditary (HAE), acquired and drug-induced — and requires highly specialist investigation to distinguish between them. ACARE accreditation confirms our centre meets the highest international standards for this complex condition.
✓ Expert differentiation of allergic, bradykinin-mediated and idiopathic angioedema subtypes
✓ Testing for C1 inhibitor deficiency and other hereditary angioedema (HAE) genetic variants
✓ Validated tools: Angioedema Activity Score (AAS) and Angioedema Control Test (AECT) used at every review
✓ Access to specialist HAE therapies: C1 inhibitor replacement, icatibant and lanadelumab
✓ Personalised angioedema emergency action plans provided to all patients at risk
Accredited by GA²LEN • Since November 2017
What This Means for You as a Patient
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Independently verified quality
Our urticaria and angioedema services are audited against 32 international criteria — not self-declared.
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Guideline-led diagnosis
We follow the EAACI/GA²LEN/EuroGuiDerm international urticaria guidelines, last updated 2022.
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Part of a global expert network
We collaborate with over 160 UCARE centres across 45 countries for the latest research and complex case support.
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Access to advanced treatments
UCARE/ACARE status confirms our capability to prescribe and monitor omalizumab and specialist HAE biologics.
London Allergy & Immunology Centre • First dual UCARE & ACARE accredited clinic in the UK • Accredited November 2017 by GA²LEN
300
allergens & components tested by ALEX³
4 nations
testing & remote care available UK-wide
5★
rated Excellent by our patients
Conditions We Treat
From Hay Fever to Complex Anaphylaxis — Expert Care for the Full Spectrum of Allergy
Our multidisciplinary team manages the full spectrum of allergic and immunological conditions in adults and children.
Evidence-Based Allergy Treatments Using the Latest Clinical Research
We follow current guidelines from the EAACI and BSACI, ensuring every patient receives the most up-to-date care available.
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EAACI 2025 Guidelines on IgE-Mediated Food Allergy confirm that component-resolved diagnostics (CRD) should be used to distinguish primary sensitisation from cross-reactive responses and to guide immunotherapy candidate selection — now a standard part of our diagnostic pathway.Santos et al., Allergy, January 2025. DOI: 10.1111/all.16345
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Oral immunotherapy (OIT) in children demonstrates 80–90% desensitisation rates for peanut, cow’s milk and egg allergy, with evidence also supporting improved quality of life for families. Our OIT programmes are structured as consultant-led clinical pathways aligned with these findings.Chowdhury & Jadeja, Frontiers in Allergy, May 2025. DOI: 10.3389/falgy.2025.1613237
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ALEX³ Component-Resolved Diagnostics now include 300 allergens and molecular components in a single blood sample, enabling precise risk stratification — distinguishing high-risk peanut proteins (Ara h 2) from low-risk cross-reactive proteins linked to oral allergy syndrome. We use ALEX³ as part of our standard allergy work-up.CRD review, Clinical & Translational Allergy, 2023; ALEX³ updated panel, 2025.
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EURneffy (Neffy) — needle-free adrenaline nasal spray was approved by the MHRA in July 2025 as an alternative emergency treatment for anaphylaxis. Our consultants can assess your suitability and prescribe this innovative option alongside or instead of traditional auto-injectors.MHRA approval, July 2025.
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EMA allergen immunotherapy guideline (January 2026) sets new standards for allergen product development for both diagnosis and immunotherapy, reinforcing the importance of specialist oversight for all AIT programmes — a requirement fully met by our consultant-led service.EMA/161669/2025, effective 1 January 2026.
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EAACI Spring Meeting 2026 — “Prevention as Treatment” highlighted early allergen introduction and proactive immunotherapy as the new paradigm in allergy care, shaping the approach our specialists take with paediatric patients and high-risk families.EAACI Spring Meeting, Belgrade, March 2026.
Advanced Diagnostics
ALEX³ Molecular Allergy Testing — 300 Allergens, One Blood Sample
Standard IgE blood tests measure your immune response to whole food extracts. Our ALEX³ component-resolved diagnostic (CRD) panel identifies IgE antibodies to the specific proteins within each allergen — the individual molecules that determine whether your reaction is likely to be mild or severe.
For example, sensitisation to the peanut protein Ara h 2 is associated with a risk of systemic anaphylaxis, while sensitisation to Ara h 8 (a birch pollen cross-reactive protein) typically indicates oral allergy syndrome only. Without CRD, this crucial distinction is missed.
Available in clinic on Harley Street and as a home postal testing kit, with results reviewed by your consultant via video.
→Guidance on immunotherapy candidate selection and dosing
Home Testing — Nationwide UK
→Simple finger-prick sample — no clinic visit needed
→Pre-paid return packaging included
→Antihistamines do NOT need to be stopped
→Results reviewed by your consultant via secure video
→Sent anywhere in England, Scotland, Wales & Northern Ireland
Treatments
Allergen Immunotherapy — The Only Treatment That Changes the Underlying Allergy
Allergen immunotherapy (AIT) is the only treatment shown to modify the underlying immune response in IgE-mediated allergy — not just suppress symptoms. By gradually retraining the immune system to tolerate a specific allergen, it can provide lasting relief and, in some cases, sustained unresponsiveness (remission).
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Clinical evidence (BSACI BRIT Registry, 2025): Paediatric allergy services offering AIT are concentrated in urban centres, creating regional inequalities in access. Our nationwide postal testing kits and video consultations were designed precisely to bridge this gap for patients across the UK who cannot access specialist care locally.
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Sublingual Immunotherapy (SLIT)
Daily drops or spray held under the tongue to desensitise to grass pollen, birch pollen, house dust mites, other tree pollen, moulds and animal dander. Safe and well-tolerated, suitable for most ages.
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Oral Food Immunotherapy (OIT)
Gradual, supervised introduction of increasing doses of the allergenic food (peanut, milk, egg) to build tolerance. Delivered in structured phases according to current EAACI and GA2LEN recommendations.
Your Patient Journey
From First Contact to Lasting Relief — Four Clear Steps
We believe a clear pathway reduces anxiety and improves outcomes. Here is what to expect when you come to UKallergy.
1
Register & Book Your Consultation
Create your patient account online in minutes, select the right specialist — allergy, immunology, dermatology, ENT or paediatrics — and choose an in-person or video appointment. Same-day video appointments are available for urgent queries.
2
Comprehensive Allergy Assessment
Your consultant takes a detailed clinical history and recommends the most appropriate tests: skin prick tests, patch tests, specific IgE blood tests including ALEX³ component-resolved panel, oral food challenges and genetic intolerance tests. All tests are painless.
3
Clear Diagnosis & Personalised Treatment Plan
Your consultant explains results in plain language, distinguishing between true IgE-mediated allergy, intolerance and cross-reactivity. A written treatment plan is provided, including avoidance strategies, medication options and referral into our immunotherapy programme where appropriate.
4
Ongoing Care, Immunotherapy & Global Support
For patients undertaking immunotherapy, regular follow-up appointments monitor progress and adjust dosing. Travelling abroad? Our Global Allergy Network (GAN) ensures continuity — partner clinics worldwide can continue your treatment so your progress is never interrupted.
Patient Experiences
Trusted by Our Patients
Read genuine accounts from adults, children and parents who found clarity, confidence and lasting relief through our care.
★★★★★
Rated Excellent based on verified patient feedback
★★★★★
“After years of uncertainty, my consultation was a revelation. The detailed clinical history and ALEX testing provided clear answers to my contact allergies and identified a separate undiagnosed condition. I finally have a clear path forward.”
S.M. — London • ✓ Verified patient
Complex Diagnosis
★★★★★
“Finding a specialist for our son’s multiple food allergies was incredibly difficult. The calm, educational approach gave us the answers we desperately needed after years of heartache. We cannot recommend the team highly enough.”
Parent of J. — Kent • ✓ Verified patient
Paediatric & Multiple Allergies
★★★★★
“I was unable to visit London so used the postal ALEX test. The results were thorough and my video consultation with the consultant was just as informative as a face-to-face visit. Brilliant service for people outside of London.”
R.K. — Edinburgh • ✓ Verified patient
Remote Testing & Video Consultation
Common Questions
Frequently Asked Questions
A food allergy involves an IgE-mediated immune response to a specific food protein, potentially causing rapid symptoms including urticaria, angioedema, vomiting, difficulty breathing and anaphylaxis. A food intolerance (such as lactose intolerance or non-coeliac gluten sensitivity) does not involve the immune system and symptoms are typically delayed, milder and limited to the digestive tract. Accurate diagnosis by a specialist — using skin prick testing, IgE blood tests or component-resolved diagnostics — is essential to distinguish between the two and to avoid unnecessary dietary restrictions.
No. As a private clinic, you can self-refer directly by registering online or calling our team on 020 3143 3449. We accept patients of all ages — adults and children — without the need for a GP letter. If you have relevant medical records or previous test results you would like us to review, you are welcome to bring these to your appointment or upload them when registering.
The ALEX³ is the latest generation of component-resolved diagnostic (CRD) testing. Unlike standard IgE tests that measure your response to whole food or pollen extracts, ALEX³ identifies IgE antibodies to up to 300 individual allergenic proteins (molecular components) in a single blood sample. This allows your consultant to determine whether a positive result reflects a true allergy or a harmless cross-reaction. This precision guides safer, more targeted treatment — including identifying which patients are most likely to benefit from immunotherapy. No antihistamines need to be stopped before the test, and it can be performed at home via a simple finger-prick postal kit.
OIT is an evidence-based treatment supported by current EAACI and BSACI guidelines for peanut, cow’s milk and egg allergy. Studies show 80–90% desensitisation rates in children. All OIT programmes at UKallergy are consultant-led and medically supervised, with the first doses always administered in clinic with monitoring. Our team will carry out a thorough pre-treatment assessment to ensure your child is a suitable candidate. Palforzia®, the only licensed peanut OIT product, is also available where appropriate.
Many private health insurance policies cover allergy consultations and diagnostic tests, including skin prick tests and IgE blood tests. Cover for immunotherapy programmes varies between insurers. We recommend contacting your insurer in advance to confirm your cover and obtain any pre-authorisation required. Our team can provide the clinical coding and documentation needed to support your claim. Payment by instalment is also available for self-paying patients.
International Network
The Global Allergy Network (GAN) — Allergy Care Wherever You Are in the World
Allergy does not pause when you travel. Through our membership of the Global Allergy Network, your treatment — including ongoing allergen immunotherapy — can be continued at partner clinics worldwide.
Whether you are travelling for work, relocating abroad, or require an international second opinion, our GAN coordinators will arrange seamless continuity of your care, including the transfer of clinical records and treatment protocols.
GAN Benefits for Our Patients
→Continuation of SCIT, SLIT or OIT at partner clinics abroad
→Transfer of treatment protocols and allergen batches
→Access to overseas specialist opinions for complex cases
→Support for international patients visiting our London clinic
→Coordination of research and clinical trial access
Take the First Step
Start Your Journey to Relief Today
Register as a new patient in minutes, choose your specialist and book your first consultation — in London or by video. Same-day appointments are often available for urgent cases.
Monday–Friday • Our friendly team will help you find the right specialist and earliest available appointment.
Trusted Providers: UKallergy London Allergy & Immunology Centre • Great British Allergy Clinic • Global Allergy Network Partner Our consultants practise in accordance with BSACI, EAACI and AAAAI guidelines. All diagnostic tests are validated and scientifically proven. We do not endorse IgG, IgG4, kinesiology, Vega testing or other non-evidence-based allergy tests. Content reviewed January 2026. For medical emergencies, call 999. If you are experiencing a severe allergic reaction, use your adrenaline auto-injector and call 999 immediately.
Read genuine stories from adults and children who found clarity and lasting relief through our personalised allergy care.
5.0
★★★★★
Rated ‘Excellent’ based on verified patient feedback
SM
Sarah M.
London ✓ Verified
★★★★★
March 2024
After years of uncertainty, my consultation was a revelation. The detailed questions and comprehensive testing provided clear answers to my contact allergies and identified a separate, undiagnosed condition. I finally have clarity and a clear path forward. The team explained everything in detail and made me feel truly heard for the first time. I cannot recommend UKallergy highly enough to anyone who has struggled to get answers from other services.
Complex Allergy Diagnosis
PJ
Parent of James
Kent ✓ Verified
★★★★★
February 2024
Finding a specialist for complex, multiple food allergies is incredibly difficult. The calm and educational approach gave us the answers we desperately needed after years of heartache. James had been living with severe restrictions. After his assessment and ALEX molecular testing, we finally understood exactly which proteins he reacts to and why. The personalised plan has transformed family life completely.
Paediatric & Multiple Allergies
RA
Parent of Amelia
Surrey ✓ Verified
★★★★★
January 2025
Amelia has completed her oral immunotherapy (OIT) programme using baked milk and can now tolerate milk without fear. The step-by-step process was expertly managed, and the whole team was incredibly supportive throughout. The gradual dose escalation was carefully monitored at every stage. Eighteen months on and we no longer carry the same level of anxiety to every meal and school trip. Truly life-changing.
Milk Oral Immunotherapy (OIT)
RK
R. Khatri
Edinburgh ✓ Verified
★★★★★
November 2024
I was unable to travel to London, so used the postal ALEX testing kit. The results were thorough and my video consultation was just as informative as a face-to-face visit. Brilliant service for patients outside of London. The kit arrived quickly, the finger-prick sample was simple to collect, and results were back within days. The consultant spent a full hour explaining exactly what the molecular component results meant for my hay fever and food sensitivities. Outstanding.
Remote ALEX test & Video Consultation
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Oliver B.
Manchester ✓ Verified
★★★★★
August 2024
After fifteen years of debilitating hay fever, I finally feel in control. The sublingual immunotherapy drops have transformed my summers entirely. The booking process was smooth and the team’s communication has been exceptional throughout. I was sceptical at first — I had tried every antihistamine going. But by the second summer on SLIT, my symptoms were dramatically reduced. The consultant was thorough in explaining the science and I appreciated the evidence-based approach at every step.
Hay Fever Sublingual Immunotherapy
FN
F. Nwosu
Birmingham ✓ Verified
★★★★★
March 2025
I was told by my GP that I had a penicillin allergy and had avoided antibiotics for over a decade. UKallergy carried out a drug allergy challenge test in Weymouth Street Hospital and safely confirmed I am not actually allergic. It has changed my medical care completely. The structured graded challenge was conducted professionally and safely in a hospital room with a nurse present by my side all the time. The consultant explained that most penicillin allergy labels are inaccurate, and that carrying one unnecessarily limits antibiotic choices. I am so grateful for finally getting the right answer.
Drug Allergy Assessment
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