In short
Marital Affair is a discreet dating site for married and attached adults, and this is its local guide for London. Joining and browsing are free; messaging is paid. Most London boroughs offer free home STI kits through SHL.UK. Report scams to Report Fraud on 0300 123 2040, and anything urgent to the Metropolitan Police on 999.
| Free home STI kits | SHL.UK, most London boroughs, aged 16+ |
|---|---|
| Not covered by SHL.UK | Hillingdon, Croydon and Greenwich |
| Report a scam | Report Fraud, 0300 123 2040 |
| Police | Metropolitan Police: 999, or 101 if not urgent |
| Divorce | No-fault in England since 6 April 2022 |
Who you'll meet, and what it costs
Joining, building a profile and browsing are free; reading and replying to messages needs a paid membership, and the prices page has the options. Checkout shows the billing name before you pay. Prices have so far been shown in US dollars, so your bank converts the charge. Members in London are part of Marital Affair's UK membership, and because profiles are shared with partner sites in the same network, some people you hear from will have joined elsewhere.
Free sexual health testing across most of London
London has its own online sexual health service, Sexual Health London, at SHL.UK. It is free for people aged 16 and over who live in most London boroughs. You order a kit online, take the samples at home and post them back, and it tests for chlamydia, gonorrhoea, HIV, syphilis and hepatitis B and C.
Three boroughs have opted out: Hillingdon, Croydon and Greenwich. If you live in one of them, or you have symptoms, go to an NHS sexual health clinic instead. They are free and confidential, you don't need a GP referral, and the NHS clinic finder lists the ones nearest your home or work. Our guide to sexual health with a new partner covers what to test for and when.
If someone tries to scam or threaten you
Most trouble on affair sites starts with a stranger who moves quickly to money or to private photos. In London:
- Report Fraud, at reportfraud.police.uk or on 0300 123 2040, takes reports of romance fraud and sextortion across England, Wales and Northern Ireland.
- The Metropolitan Police on 999 if you are in danger or a crime is happening now, or 101 for anything that is not urgent.
- The Revenge Porn Helpline supports adults whose intimate images have been shared or are being used as a threat.
Stop replying, keep the messages and report the profile to us through the help centre. The guide to scams and blackmail explains the usual scripts.
The law in England
Adultery is not a crime anywhere in the UK, and in England a divorce no longer needs a reason: no-fault divorce has been the law in England and Wales since 6 April 2022, and couples can apply jointly. The UK page sets out the rules in each nation, and our guide to separation and divorce goes further. None of this is legal advice; speak to a family solicitor before acting.
Talking to someone
Relate offers counselling for individuals as well as couples, mostly online, with fees set by household income. Samaritans answer on 116 123 at any time. Our page on getting support lists more.
Before you meet
Our safety page and the guide to meeting safely cover first meetings, and the discretion page explains what the site shows and sends: the billing name, account emails and who can see your profile.
Questions people ask
Can I get a free STI test at home in London?
In most boroughs, yes. Sexual Health London (SHL.UK) is the capital's free online service for people aged 16 and over: you order a kit, take samples at home and post them back. It tests for chlamydia, gonorrhoea, HIV, syphilis and hepatitis B and C. Hillingdon, Croydon and Greenwich have chosen not to take part, so residents there should use their local clinic.
Is having an affair illegal in London?
No. Adultery is not a crime anywhere in the UK, and since April 2022 a divorce in England doesn't need a reason. Blackmail, fraud and sharing or threatening to share intimate images are crimes.
Who do I contact if someone threatens to expose me?
Stop replying, keep the evidence and report it to Report Fraud, which has a page on sextortion, or to the Metropolitan Police on 999 if you feel in danger. The Revenge Porn Helpline supports adults facing intimate image abuse.
Keep reading
- Discreet dating for married people in ManchesterFor Manchester members: The Northern's sexual health service, reporting scams and threats, the law in England and support.
- Discreet dating for married people in NewcastleFor Newcastle members: the New Croft Centre, DIY STI kits, reporting scams and threats, the law in England and support.
- Discreet dating for married people in SheffieldFor Sheffield members: Sexual Health Sheffield, reporting scams and threats, the law in England and support.
- Discreet dating for married people in BelfastFor Belfast members: home STI kits, Belfast Trust sexual health, reporting scams, Northern Ireland divorce rules and support.
Sources
- About SHL.UK, Sexual Health London
- SHL.UK clinics
- Find a sexual health clinic, NHS
- Report Fraud and Cyber Crime Reporting Centre
- Sextortion, Report Fraud
- Revenge Porn Helpline
- New divorce laws from 6 April 2022, GOV.UK
- Getting a divorce, GOV.UK
- Counselling services, Relate
Checked 9 November 2026. Spotted something out of date? Tell us.

