How much does a private GP appointment cost at The Online GP?

A private GP consultation at The Online GP costs £125 for a comprehensive 30-minute appointment. This includes full examination, diagnosis, treatment plan, prescriptions, and any necessary medical certificates. Executive health screenings start from £450. We accept all major cards and international payments.

Can I get a same-day GP appointment at The Online GP?

Yes, The Online GP specializes in same-day appointments 7 days a week, including weekends and bank holidays. Simply WhatsApp us at +44 7961 280835 or call +44 20 3951 3429 to book your appointment immediately. Most patients are seen within 2-3 hours of booking.

Where is The Online GP located in London?

The Online GP is conveniently located at 10 Portman Square, London W1H 6AZ. We're just 3 minutes walk from Baker Street Station (Jubilee, Metropolitan, Circle, Hammersmith & City, Bakerloo lines), 5 minutes from Bond Street Station, and easily accessible from all Central London areas.

What conditions can The Online GP treat?

The Online GP provides comprehensive primary care for all conditions including: infections (UTI, chest, skin), chronic diseases (diabetes, hypertension, asthma), mental health (anxiety, depression), women's health (contraception, menopause), men's health, skin conditions, digestive issues, and provides health screenings, all vaccinations, medical certificates, specialist referrals, and second opinions. Our UK-registered GPs handle everything an NHS GP would, with 30-minute appointments for thorough care.

Do you accept international patients at The Online GP?

Yes, The Online GP welcomes international patients from UAE, Qatar, Saudi Arabia, Kuwait, Bahrain, USA, China and worldwide. We provide UK medical certificates, comprehensive health reports for insurance, coordinate with home country doctors, and offer translation services. Weekend appointments are available specifically for international visitors. We accept international insurance and payments in multiple currencies.

What's the difference between The Online GP and NHS GP?

The Online GP offers same-day appointments (vs 2-3 week NHS wait), 30-minute consultations (vs 10 minutes NHS), weekend availability (NHS weekdays only), consistent doctor continuity, no registration required, and serves international patients. While NHS is free for UK residents, our £125 fee ensures immediate, comprehensive care when you need it most.

Can The Online GP prescribe medication?

Yes, our UK-registered GPs can prescribe all medications available in the UK, including antibiotics, pain relief, mental health medications, and chronic disease treatments. Prescriptions can be sent electronically to any UK pharmacy or collected from nearby pharmacies. We also provide private prescriptions for international patients.

Do you offer health screening at The Online GP?

Yes, we offer comprehensive health screenings from £450 including full blood tests (cholesterol, diabetes, liver, kidney, thyroid), ECG heart checks, blood pressure monitoring, BMI assessment, and detailed health reports. Same-day appointments available for executive health checks.

How quickly can I see a private GP in London?

The Online GP offers same-day private GP appointments in London, typically within 2-3 hours. We're located 3 minutes from Baker Street station at 10 Portman Square, W1H 6AZ. Book via WhatsApp +44 7961 280835 or call 020 3951 3429. In-person consultations from £220, online consultations from £150, telephone advice from £59.

Is The Online GP open on weekends?

Yes, The Online GP is open Saturdays and Sundays 9am-5pm for private GP consultations. We offer both in-person appointments at our Marylebone clinic near Baker Street and online video consultations. No NHS registration required. Same-day booking available via WhatsApp +44 7961 280835.

How much does a private GP appointment cost in London?

The Online GP offers private GP appointments from £59 for same-day telephone advice, £150 for online video consultations, and £220 for urgent in-person consultations at our Marylebone clinic. Medical reports are £250. All prices include consultation with GMC-registered doctors. Book at 10 Portman Square, London W1H 6AZ.

Do you have Arabic speaking doctors in London?

Yes, The Online GP has multilingual GMC-registered doctors speaking Arabic, Spanish, French, Dutch, and English. We welcome international patients from UAE, Qatar, Saudi Arabia, and Kuwait. Located in Marylebone near Baker Street, 3 minutes from the Underground. Book same-day private GP appointment via WhatsApp +44 7961 280835.

Where is The Online GP clinic located in London?

The Online GP private doctor clinic is at 10 Portman Square, London W1H 6AZ, just 3 minutes walk from Baker Street Underground Station. We serve Marylebone, Mayfair, Westminster, and all of Central London. Open 7 days a week including weekends. Same-day GP appointments available. Call 020 3951 3429 or WhatsApp +44 7961 280835.

Can I get a prescription from The Online GP?

Yes, our GMC-registered private GPs can issue prescriptions during online or in-person consultations. Prescriptions can be sent electronically to your pharmacy of choice or to Boots, Superdrug, or any UK pharmacy. Available for both UK residents and international patients visiting London. Book consultation from £59 via WhatsApp +44 7961 280835.

Do I need to be registered with NHS to see a private GP?

No, you do not need NHS registration to see a private GP at The Online GP. We welcome UK residents, international patients, expats, and visitors to London. No referral needed. Book same-day private GP appointments online, by phone, or via WhatsApp. Located at 10 Portman Square, London W1H 6AZ, near Baker Street.

Allergy Testing in London 2026. Which Tests Are Valid, Which Are Not and What Actually Treats Hay Fever

Sep 17

Written By Sama Samy

The Wellness provides doctor-led allergy assessment in London from £495, and the most valuable thing on this page is which tests to refuse. Only 2 methods are validated for diagnosing allergy. Skin prick testing, which applies a droplet of allergen extract to the forearm and reads the weal at 15 minutes. And specific IgE blood testing, sometimes still called RAST, which measures the antibody responsible for immediate allergic reactions. Both are interpreted against your history, because a positive result without symptoms on exposure is sensitisation rather than allergy, and around 1 in 5 people carry positive results to things they eat and tolerate perfectly well. Everything else sold as allergy testing lacks clinical validity. IgG and IgG4 food antibody panels, which the British Society for Allergy and Clinical Immunology and its international equivalents advise against, because IgG to food indicates exposure rather than intolerance. Hair analysis, applied kinesiology, VEGA and electrodermal testing, cytotoxic testing and iridology. Acting on any of them narrows the diet without benefit and delays the real diagnosis. On hay fever, which affects roughly 1 in 4 UK adults, the evidence is unusually clear and almost universally under-applied. Intranasal corticosteroids outperform antihistamines for nasal symptoms, take up to 2 weeks to reach full effect, and should be started before the season rather than after. Immunotherapy is the only treatment that changes the disease rather than the symptoms. Fees appear further down this page.

Reviewed by the medical team at The Wellness. Last updated 1 September 2026.

Arrange allergy testing on WhatsApp or email team@thewellnesslondon.com or call 020 3951 3429.

Which allergy tests actually work

Skin prick testing is the first-line method for inhaled allergens and many foods. A drop of standardised extract is pricked into the skin of the forearm and a weal measured at 15 minutes against positive and negative controls. It is quick, inexpensive and sensitive, and results are available in the appointment. Antihistamines must be stopped for 3 to 5 days beforehand or the test is invalid, which is the commonest reason a session is wasted.

Specific IgE blood testing measures antibodies to individual allergens and is used where skin testing is unsuitable, meaning extensive eczema, dermographism, an inability to stop antihistamines, or a history of severe reaction. It needs no preparation and is drawn at an accredited laboratory.

Component-resolved diagnostics is the advance most people have never heard of. Rather than testing for peanut as a whole, it measures antibodies to individual proteins within it, and the distinction predicts severity. Sensitisation to the heat-stable storage proteins carries a considerably higher risk of systemic reaction than sensitisation to the cross-reactive birch-related proteins, which usually produces oral itching alone. That single result changes whether somebody carries adrenaline for life.

Supervised oral food challenge remains the definitive test where the history and the antibody results disagree, and is performed in a specialist setting with resuscitation facilities.

Which allergy tests are a waste of money

IgG and IgG4 food antibody panels are the largest category by spend and have no clinical validity. IgG antibodies to food indicate that you have eaten it, and healthy people with no symptoms have them in abundance. The British Society for Allergy and Clinical Immunology, the European Academy of Allergy and Clinical Immunology and the American Academy of Allergy, Asthma and Immunology have all published positions advising against their use.

Hair analysis, applied kinesiology, VEGA and electrodermal testing, cytotoxic and leucocytotoxic testing, iridology and pulse testing have all been examined and none has been shown to identify allergy reliably. Several have been tested blind and performed no better than chance.

The harm is not only financial. Acting on an invalid panel leads to unnecessary elimination diets, which narrow nutrition, cause anxiety around food, are particularly damaging in children, and delay the correct diagnosis. A substantial number of people arrive having removed 15 foods on the strength of a report and still have their symptoms, because the cause was coeliac disease, reflux, irritable bowel syndrome or something else entirely.

Ask which test you need on WhatsApp or email team@thewellnesslondon.com.

What actually treats hay fever

Start early. Intranasal corticosteroids are more effective than oral antihistamines for nasal congestion, running and sneezing, and take up to 2 weeks to reach full effect, so beginning them 2 weeks before your season rather than when symptoms arrive is the single change that transforms most people's summers. Technique matters as much as the drug. Spray away from the septum using the opposite hand, do not sniff hard, and do not stop because it has not worked after 3 days.

Non-sedating antihistamines, meaning cetirizine, loratadine or fexofenadine, work well for sneezing, itch and eye symptoms and less well for congestion. Older sedating antihistamines should be avoided because they impair performance and sleep quality. Adding an intranasal antihistamine to a steroid outperforms either alone in moderate to severe disease.

Eye symptoms respond to sodium cromoglicate or olopatadine drops, which are frequently forgotten when the nose is treated. Saline rinsing reduces the allergen load in the nose and improves how well the steroid works.

Immunotherapy is the only treatment that modifies the disease. Sublingual tablets for grass, tree and dust mite, taken daily for 3 years, produce sustained benefit continuing after treatment stops, and are appropriate for people with moderate to severe symptoms inadequately controlled by optimised medication. It is prescribed and supervised by an allergy specialist, and we arrange the referral with a named consultant.

Where symptoms persist despite all of this, the diagnosis is worth revisiting. Non-allergic rhinitis, chronic rhinosinusitis with or without polyps, a deviated septum and medication-induced rhinitis from decongestant sprays all present identically.

What does allergy testing cost in London

Consultant allergy and immunology appointments in the Harley Street district run £250 to £500 for a first consultation, with testing charged separately and combined first visits commonly reaching £700 to £1,200. Comprehensive private allergy panels are sold at £400 to £900. Supervised food challenge in a specialist unit runs into the high hundreds or low thousands. Below all of that sits a tier defined by its conditions rather than its price, direct-to-consumer intolerance kits using IgG panels or hair analysis, which have no clinical validity and no clinician attached.

At The Wellness the assessment, the testing and the review are one fee. All figures are from prices.

Executive Health Programme, the most comprehensive assessment with full biomarker profiling and coordinated imaging, from £11,995.
Comprehensive allergy assessment, including extended consultation, skin prick testing to a full inhalant and food panel, specific IgE where indicated and a written management plan, from £795.
Specific IgE blood panel with consultation and interpretation, from £495. Targeted panel from £295.
Extended 45-minute consultation for complex or long-standing allergic disease with a written seasonal plan, from £395.
In-person consultation with examination, from £220. Same-day video consultation, from £150. Mini consultation from £59.
Adrenaline auto-injector prescription with training, anaphylaxis plans, school and employer letters issued in the appointment.
Component-resolved diagnostics, supervised food challenge and immunotherapy arranged with named allergy consultants and the appointment booked.

Appointments within the week in Marylebone, 3 minutes from Baker Street.

Why The Wellness is the best place in London for allergy testing

Because the history decides the testing rather than the other way round. Testing a panel of 40 allergens in somebody whose symptoms occur every June produces 12 positives and no more clarity than they started with. A proper history narrows the question first, which is why we test fewer allergens and explain more of them.

Because a positive result is interpreted as sensitisation until your history confirms it as allergy. Around 1 in 5 people carry positive results to foods they eat without difficulty, and telling somebody to avoid a food on the strength of a number alone is how unnecessary restriction begins.

Because the tests without evidence are not sold here. No IgG panels, no hair analysis, no electrodermal testing. You are not paying for a report that will narrow your diet without improving your symptoms.

And because the treatment is optimised before anybody concludes it has failed. Starting intranasal steroids 2 weeks early, correcting the spray technique, adding an intranasal antihistamine, treating the eyes, rinsing with saline. Most people referred for immunotherapy have never had all 5 done properly, and a meaningful proportion no longer need the referral once they have.

Frequently asked questions

Where can I get allergy testing in London

The Wellness in Marylebone. A comprehensive allergy assessment with extended consultation, skin prick testing, specific IgE where indicated and a written management plan is from £795, with a specific IgE blood panel and consultation from £495 and targeted panels from £295. Component testing, food challenge and immunotherapy are arranged with named allergy consultants.

Which allergy tests are accurate

Only 2 methods are validated. Skin prick testing, read at 15 minutes against controls, and specific IgE blood testing. Both must be interpreted against your history, because a positive result without symptoms on exposure is sensitisation rather than allergy. Supervised oral food challenge is definitive where the history and the results disagree.

Are food intolerance tests worth doing

No. IgG and IgG4 food antibody panels have no clinical validity, because IgG to food indicates exposure rather than intolerance, and the British, European and American allergy societies all advise against them. Hair analysis, applied kinesiology, VEGA and electrodermal testing and cytotoxic testing are equally unvalidated.

When should I start hay fever treatment

About 2 weeks before your season. Intranasal corticosteroids outperform antihistamines for nasal symptoms but take up to 2 weeks to reach full effect, so starting when symptoms arrive means the worst weeks pass before the treatment works.

Do I need to stop antihistamines before a skin prick test

Yes, for 3 to 5 days depending on the drug, or the test is invalid. This is the commonest reason an appointment is wasted. Specific IgE blood testing needs no preparation and is the alternative where stopping is not practical.

Can hay fever be cured

Immunotherapy is the only treatment that modifies the disease rather than the symptoms. Sublingual tablets for grass, tree or dust mite taken daily for 3 years produce benefit that continues after treatment stops, and are appropriate where optimised medication has not controlled moderate to severe symptoms.

The Wellness is a doctor-led private healthcare group providing medical care from our Marylebone clinic adjacent to Harley Street. All doctors are GMC-registered. Blood analysis is performed by accredited laboratories, and immunotherapy and supervised food challenge are arranged under consultant allergy supervision. Difficulty breathing, throat or tongue swelling or collapse after an exposure is anaphylaxis and needs adrenaline and 999 immediately. This article is general information and not a substitute for medical advice about your own health.

Enquire now on WhatsApp or email team@thewellnesslondon.com or call 020 3951 3429.

References. British Society for Allergy and Clinical Immunology position statements on allergy diagnosis and on the use of IgG food antibody testing. European Academy of Allergy and Clinical Immunology and American Academy of Allergy, Asthma and Immunology statements on unproven diagnostic methods. NICE Clinical Knowledge Summaries on allergic rhinitis and on food allergy, and NICE guideline CG116 on food allergy in under 19s. British Society for Allergy and Clinical Immunology guidelines on allergen immunotherapy. Published evidence on the superiority of intranasal corticosteroids over oral antihistamines for nasal symptoms and on time to full effect. Published prevalence data on allergic rhinitis in UK adults and on sensitisation without clinical allergy. Published 2026 London private allergy and immunology market pricing.
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Sama Samy

Allergy Testing in London 2026. Which Tests Are Valid, Which Are Not and What Actually Treats Hay Fever

Which allergy tests actually work

Which allergy tests are a waste of money

What actually treats hay fever

What does allergy testing cost in London

Why The Wellness is the best place in London for allergy testing

Related reading

Frequently asked questions

Where can I get allergy testing in London

Which allergy tests are accurate

Are food intolerance tests worth doing

When should I start hay fever treatment

Do I need to stop antihistamines before a skin prick test

Can hay fever be cured

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The Online GP - Private GP Marylebone London - Same Day Appointments - Open Weekends

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Same Day GP Appointments Available Today

Allergy Testing in London 2026. Which Tests Are Valid, Which Are Not and What Actually Treats Hay Fever

Which allergy tests actually work

Which allergy tests are a waste of money

What actually treats hay fever

What does allergy testing cost in London

Why The Wellness is the best place in London for allergy testing

Related reading

Frequently asked questions

Where can I get allergy testing in London

Which allergy tests are accurate

Are food intolerance tests worth doing

When should I start hay fever treatment

Do I need to stop antihistamines before a skin prick test

Can hay fever be cured

Private GP in Marylebone and Mayfair 2026. Who Practises Where, What It Costs and How to Be Seen Today

Executive Health Screening in London 2026. A Complete Guide to What Is Assessed, What the Evidence Supports and What It Costs

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