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Sexual health in London: where to test, and how fast

Clinics in London, what to ask for, and how long each infection takes to show up. No lecture, no judgement - just the part men usually have to look up twice.

Updated 3 Sep 2026

London has the best free sexual health service of any city in Europe, and almost nobody uses it properly. 56 Dean Street sits in the middle of Soho, is free, and does not need a GP referral or an address; postal kits arrive in unmarked packaging within days. There is no version of "too busy" that survives contact with how easy this actually is.

Where to get tested in London

You do not need a story and in most of these you do not need a name. Walk in, say you want a full screen, leave.

What the London list adds up to

Counted from the places above, so it says something about London rather than about testing in general:

How long before a test means anything

This is the part almost everyone gets wrong: a test taken the morning after tells you about last month, not about last night. Rough windows, counted from the exposure:

Condoms, PrEP, and the honest version

Condoms remain the only thing that lowers the risk of everything at once, and they fail mostly when they are put on late. PrEP is a daily or on-demand pill that prevents HIV and nothing else - it is not a substitute, it is a second layer, and in most of Europe it is available cheaply through a public clinic. If something has already happened and you are inside 72 hours, PEP exists and the clock is real: go to an emergency department and say the word.

When not to wait

Burning, discharge, an ulcer that does not hurt, a rash on the palms or soles, a fever with swollen glands two weeks after. None of these are emergencies, and all of them mean today rather than next month.

What "verified" does and does not mean

Verification on Red Light District London means a person watched a face and body video review and held it against the photographs in the gallery. It says the woman in the photographs is the woman you will meet. It is not a health certificate, and any site that implies otherwise is selling you something. Your health is your own arrangement, and it takes about twenty minutes twice a year.

Nothing on this page is medical advice, and none of it replaces a doctor who can look at you. It is the practical version of what a clinic in London would tell you if you asked.

All companions in London

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Adults only, 18+. Red Light District London is a directory of independent companions, not an agency, and takes no part in what two adults agree between themselves. Nothing here is legal or medical advice.