National Ugly Mugs: the most important safety tool in the UK
If you work in the UK and you're not registered with National Ugly Mugs, fix that today. It's free, it's confidential, and it's the closest thing the UK has to a central bad-date system.
National Ugly Mugs (NUM) is a charity that lets sex workers across the UK report dangerous clients and get real-time alerts about people linked to violence or harm. They work at a big scale: close to one million safety alerts a year go out to registered members. When someone reports a dangerous client in Manchester, providers in London, Birmingham and Leeds get the alert. The system only works because providers share information, and it protects everyone who's part of it.
You register online, you can use your working name, and your info isn't shared with police without your clear consent. Once registered you get the number and email checker, so you can run a client's phone number or email against the NUM database before confirming. It takes thirty seconds and tells you whether other providers have reported the person messaging you.
You can reach NUM at admin@uglymugs.org or 0161 629 9861, Monday to Friday, 9am to 5pm. If something happens, you can report it to NUM and decide whether the info goes to police. That choice is completely yours.

ClientEye: the app version
ClientEye is an app made by sex workers for sex workers, built to work alongside NUM. Providers use it to share and check alerts about dangerous clients and timewasters. It's especially handy for checking a phone number fast before you answer a new enquiry. Use it with NUM, not instead of it. The databases are different, so using both covers more ground.
Screening clients in the UK context
The UK has nothing like P411, no central verified-client database used as widely as in the US. What the UK has instead is a mix of NUM/ClientEye checks, phone screening and information shared within the community.
The basics are the same everywhere: get a real name and a real phone number (not a VOIP number) before you confirm any booking. Research keeps showing that when sex workers can screen and talk to clients beforehand, the chance of violence drops a lot compared to when they can't. That comes straight from UK research, and it's why screening is worth every minute.
Always speak to a new client on the phone before meeting. You learn more about a person by talking to them than you ever can from texts or emails. How they talk to you, whether they're respectful, whether their story holds together, all of that comes through on a call in a way it doesn't in messages. Make it standard for anyone you haven't met.
Run their number through NUM and ClientEye. If they have no online presence at all, take note, most real people leave some kind of digital trace. If their story doesn't add up or they dodge basic questions, trust that feeling.
Your check-in system
Have someone who knows your schedule. It doesn't have to be complicated, but it has to be real: a trusted contact who has the name or reference of the person you're seeing, the address, the booking time and when they should hear from you.
Check in before every appointment and after. If your contact doesn't hear from you within the agreed time after a booking should end, they know to act. What exactly they do should be agreed in advance: call you, call the number you gave, contact NUM or something else. The system only works if both of you know what happens when the check-in doesn't come.
Some providers use a group chat with other local providers for this. Others have one trusted friend. The format doesn't matter, doing it every time does.

Incall safety: your space, your control
Working incall, from a space you control, gives you big safety advantages over outcall. You know the exits. You know the layout. You can calm things down or leave on your own terms. You don't depend on a client's goodwill to get out of a situation.
A few things that matter in an incall space:
Know your exits. The front door is only one of them. If your flat has a back exit or a shared stairwell, know where it goes and whether you can get to it fast. Sounds like overkill until it isn't.
Keep valuables out of the working area. Phones, laptops, documents with your real name or address, anything that links your work identity to your personal one shouldn't be visible or reachable where you see clients.
Don't work alone in a space with another provider. This is the UK legal reality: two providers working from the same premises counts as a brothel under English law, which is a criminal offence. The law gets a lot of criticism for pushing providers into less safe solo work, but in 2026 it's still the law. If you want a safety setup with another provider, build it with remote check-ins instead of a shared working space.
Outcall safety: what changes when you leave your space
Outcall has different risks from incall. You're somewhere you don't control, and you have less power to manage a situation. That doesn't make outcall unsafe by default, most outcalls go fine, but preparation matters more.
Your check-in contact needs the full address for every outcall. Not "a hotel in Mayfair," but the actual address and room number. If something goes wrong, the info has to be specific enough to act on.
For hotel outcalls, the Beyond the Gaze project has specific advice on working safely in hotels, including how to size up a hotel, how to handle the front desk and how to leave cleanly if something feels off. Worth reading before your first hotel outcall if you haven't yet.
For outcalls to a private home, the client's place or a rented property, screening matters even more. Check the address is real before you go. A quick look at whether the address exists and matches what the client said takes two minutes.
Online safety and protecting your identity
Your work identity and your personal identity need to be truly separate. Not roughly separate, truly separate. Different name, different phone number, different email, different social media accounts with no links between them.
Most adult sites now strip EXIF data from photos automatically, but check this for every platform you use. EXIF data can show the GPS location where a photo was taken: your flat, your neighbourhood, your real address.
Compare your work photos against your personal social media before posting them. Now and then, reverse image search your own photos to see what turns up. If your work photos show up anywhere you didn't put them, you need to know.
Use a separate work phone, a cheap second handset or a number on a second SIM. Never give clients your personal number. If you stop seeing a client, you need to be able to cut contact cleanly.
When things go wrong: what to do
If you're the victim of a crime, assault, robbery, rape or anything else, you have options, and you don't have to deal with them alone.
In an immediate emergency, call 999. Tell the operator what you need, police, ambulance or fire, and give your location. If you can't speak safely, stay on the line, the operator can still trace where you are.
If you're not in immediate danger and want to report what happened, NUM lets you report incidents and choose whether to share the info with police. You can report under your working name. The report still goes into the system and can warn other providers even if you don't involve police.
The Metropolitan Police and Greater Manchester Police both have clear sex worker safety policies and dedicated contacts. Several UK police forces have signed up to work with NUM, so reports shared with police through NUM can be acted on without you having to go to a station or give a formal statement right away.
Rape Crisis England and Wales (0808 802 9999, 24 hours) offers free, confidential support to anyone who has experienced sexual violence, no matter when it happened or whether they've told police.
Community: the safety resource that doesn't cost anything
Other providers in your area know things no guide can tell you: which clients are trouble, what enforcement looks like right now, which hotels have become difficult, where a new dangerous person is active. That info moves through provider networks, and being part of them is one of the best safety investments you can make.
SWARM (Sex Worker Advocacy and Resistance Movement) and the English Collective of Prostitutes both have community links in UK cities. Local provider groups on Signal, WhatsApp or closed forums exist in most big cities. Ask SWARM or NUM how to find the ones for your area.
You don't have to share personal info to join these networks. Your working name and rough area are enough. What you get back, live safety info from people who know your exact market, is really valuable.
Key contacts at a glance
National Ugly Mugs β nationaluglymugs.org / admin@uglymugs.org / 0161 629 9861. Register free, run number checks, report incidents.
ClientEye β App for checking client numbers and emails against community-reported alerts.
English Collective of Prostitutes β prostitutescollective.net. Know-your-rights resources, legal support, advocacy.
SWARM β swarmcollective.org. Sex worker rights, safety, and community connections across the UK.
Rape Crisis England and Wales β 0808 802 9999, 24 hours, free and confidential.
Beyond the Gaze β beyond-the-gaze.com. Practical safety guides specifically for indoor and online sex workers.
Emergency β 999. Police, ambulance, or fire. If you can't speak, stay on the line.

James Whitaker