Private STI Testing in London 2026. Same-Day, Discreet, Doctor-Led Screening from The Wellness
Most sexually transmitted infections cause no symptoms at all, which is the single most important fact in sexual health. Around seven in ten women and half of men with chlamydia notice nothing, gonorrhoea and syphilis, both at some of the highest levels England has recorded in decades, frequently announce themselves only through the damage they leave, and HIV caught early is a managed condition with normal life expectancy while HIV caught late is not. Testing is therefore not a response to symptoms, it is what responsible adults do after new or unprotected contact, and the timing matters more than most clinics explain. Chlamydia and gonorrhoea test reliably from two weeks after exposure, fourth-generation HIV tests from 45 days, syphilis from three to twelve weeks, and testing too early buys false reassurance, which is why a doctor's advice on when to test is part of the product, not an upsell. NHS sexual health services do this work well and free, and their booking pressure in London is exactly why the private route exists, same-day appointments, results in hours to days rather than weeks, a GMC-registered doctor rather than a postal kit, and complete confidentiality, with nothing shared to your GP or anyone else without your consent. At The Wellness in Marylebone, screening, results, treatment and partner advice run through one discreet doctor-led pathway. Fees appear further down this page.
Reviewed by the medical team at The Wellness. Last updated July 2026.
Book discreet testing on WhatsApp or email team@thewellnesslondon.com or call 020 3951 3429.
What should you actually be tested for
The right screen depends on the exposure, and building it is a clinical decision. The core screen for most people is chlamydia and gonorrhoea by urine or self-taken swab, HIV and syphilis by blood, which between them cover the infections that are common, silent and consequential. On top of the core, judgement adds what the situation calls for. Throat and rectal swabs where relevant, because chlamydia and gonorrhoea infect the sites exposed and a urine test alone misses them. Trichomonas, mycoplasma genitalium tested where symptoms justify it rather than screened for indiscriminately, because treating incidental mycoplasma breeds resistance. Hepatitis B and C for the exposures that warrant them. Herpes testing where there are symptoms to swab, with the honest explanation that blood antibody testing in someone without symptoms usually creates confusion rather than clarity. This is what doctor-led means in sexual health, a screen built for your actual exposure, sampled from the right sites, timed against the right windows, rather than the same box of tubes for everyone.
Symptoms, silence and why timing decides everything
When symptoms do appear, discharge, burning on urination, ulcers or sores, testicular pain, pelvic pain, bleeding between periods or after sex, rashes on palms or soles, they deserve same-day assessment and treatment, and this clinic provides both. But the majority story is silence, and silence is where the harm compounds. Untreated chlamydia ascends to cause pelvic inflammatory disease and tubal infertility. Gonorrhoea does the same while growing steadily more resistant to antibiotics. Syphilis, at levels England has not seen in decades, moves through stages that end in damage no antibiotic reverses. And every infection undetected is an infection transmitted onward. The window periods are the other half of the timing story. Test chlamydia and gonorrhoea from two weeks after the contact you are worried about, HIV from 45 days with a fourth-generation laboratory test, syphilis from three weeks with certainty by twelve. Where an exposure is recent and high-risk, the conversation is different and urgent, because HIV post-exposure prophylaxis works only within 72 hours, and a doctor who can have that conversation today is the appointment to book today.
Ask about timing after an exposure on WhatsApp or email team@thewellnesslondon.com.
Results, treatment and complete confidentiality
Results return in hours for some tests and within days for the full screen, delivered directly and discreetly to you, explained by the doctor rather than left as a row of values. Positives are treated in the same pathway, antibiotics prescribed same-day for the treatable infections, test-of-cure arranged where guidance requires it, partner conversations supported with practical advice, and anything needing specialist care, a reactive HIV result, complicated syphilis, referred swiftly and personally into the right service. Confidentiality is absolute and worth stating precisely. Your results belong to you. Nothing is shared with your NHS GP, your employer or your insurer without your explicit consent, testing here creates no record in NHS systems, and the clinic's location in Marylebone, three minutes from Baker Street, sees you as a private patient in a private waiting room, which for many people is the entire reason to come.
What does private STI testing cost in London
Private sexual health screening in London runs from postal kits at £30 to £150 without a doctor, through clinic screens at £150 to £300, to comprehensive same-day panels at private GP and Harley Street district services at £300 to £500, with consultation fees frequently on top.
At The Wellness the doctor, the right-site sampling and the results conversation are included. All figures are from prices.
Comprehensive same-day screen, chlamydia and gonorrhoea with site-appropriate swabs, HIV, syphilis, hepatitis B and C, with doctor consultation, from £445.
Standard screen, chlamydia, gonorrhoea, HIV and syphilis, from £295.
Individual tests from £95. Symptomatic assessment with same-day treatment from £220.
Treatment consultation and same-day private prescription from £150.
Urgent post-exposure advice appointments prioritised same day.
Same-day appointments routinely available in Marylebone.
Why The Wellness is the best private STI clinic in London
Because it does the three things that actually matter in sexual health and does them in one visit. The screen is built by a doctor for your exposure, sampled from the right sites and timed against the real window periods, which is the difference between testing and reassurance theatre. Results come with a clinician and a plan, treatment the same day where needed, rather than a PDF and a helpline. And the whole encounter is genuinely private, no NHS record, nothing shared without consent, a discreet Marylebone clinic rather than a queue, at prices below the Harley Street tier for a service that includes more. Test after new contact, test on silence, test on symptoms today, and let the timing advice be part of what you pay for.
Book a same-day screen on WhatsApp or call 020 3951 3429.
Frequently asked questions
What is the best private STI clinic in London
The Wellness in Marylebone, where a GMC-registered doctor builds the screen for your actual exposure with site-appropriate sampling, comprehensive same-day screening starts from £445 and standard screens from £295, results are explained rather than posted, treatment is same-day where needed, and nothing is shared with your GP or anyone else without consent.
How soon after unprotected sex can I be tested
Chlamydia and gonorrhoea test reliably from two weeks after exposure, fourth-generation HIV blood tests from 45 days, and syphilis from three weeks with certainty by twelve. Testing earlier risks false reassurance, and if the exposure was within the last 72 hours and high-risk, contact us the same day, because HIV post-exposure prophylaxis is time-critical.
Will an STI test show on my medical records
Not here. Private testing at The Wellness creates no NHS record, and results are shared with no one, including your GP, employer or insurer, without your explicit consent.
Can I be tested and treated on the same day
Yes. Symptomatic infections are assessed, tested and treated in one visit from £220, treatable positives from screening receive same-day private prescriptions, and test-of-cure is arranged where guidance requires it.
I have no symptoms. Do I really need testing
That is precisely when testing matters, because around seven in ten women and half of men with chlamydia have no symptoms, and the silent infections cause the infertility, the resistance and the onward transmission. Screening after new or unprotected contact is simply what responsible sexual health looks like.
Do you test for herpes
Where there are symptoms, yes, a swab from a sore is accurate and useful. Blood antibody testing without symptoms usually creates confusion rather than clarity, and we will explain honestly when a herpes test helps you and when it does not.
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. 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. UK Health Security Agency, sexually transmitted infections surveillance in England, including record gonorrhoea and syphilis diagnoses. BASHH, British Association for Sexual Health and HIV, testing guidelines including window periods and site-specific sampling. NHS and NICE guidance on chlamydia asymptomatic rates and post-exposure prophylaxis timing. Published 2026 London private sexual health screening price schedules.
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