Most People Don’t Know You Can Text 999 in the UK. Here’s Everything You Need to Know.
Written by Stephanie Austin — Owner & Lead Trainer, Prima Cura Training | Last reviewed: July 2026 | Next review: July 2027
Most People Don’t Know You Can Text 999 in the UK. Here’s Everything You Need to Know.
I ask this question in almost every first aid course I deliver, and the answer is almost always the same. People look at me blankly. A few will tentatively say ‘no’. Very occasionally, someone will say, ‘I think you can register for something?’ and they’re right, but they can’t usually tell me what or how.
The UK has had a service that lets you contact 999 by text message since 2009. Sixteen years. And most people, including people who work in healthcare, care homes, schools, and safety-critical environments, have never heard of it.
That bothers me. So here’s the full picture.
| The Short Version Yes, you can text 999 in the UK. You must register your mobile number before you need it. Text ‘register’ to 999, then reply ‘yes’.The service, called emergencySMS, is run by Relay UK. It works on all UK mobile networks but cannot be used from abroad. If you can make a voice call, always do that first. Texts take longer to process. Registration takes about two minutes, and you only ever need to do it once (unless you change your number). |
What Is the Emergency SMS Service?
emergencySMS is the UK’s official text-to-999 service. It lets you send a text message to 999 that will be passed directly to the police, ambulance service, fire and rescue, or coastguard.
The service is run by Relay UK (operated by BT) and has been live since September 2009. A relay assistant acts as a bridge: they read your SMS to the 999 operator and send the operator’s response back to you as a text. It is a two-way conversation, not a one-way message.
It was originally developed for deaf, hard-of-hearing, and speech-impaired people in the UK, and that remains its primary purpose. But registration is open to anyone, and Relay UK confirms the service is available to all UK mobile users. If you are ever in a situation where you genuinely cannot make a voice call, this service exists for you too.
Who Should Register?
The obvious answer is: anyone with a hearing loss or speech impairment. For those individuals, emergencySMS is a genuinely critical lifeline. But stop and think about the people you work with, the people you care for, and the environments you work in.
If you work in any of the following settings, there is a strong case for making sure your team knows about this service and has registered:
- Care homes and domiciliary care: service users with acquired hearing loss, progressive conditions affecting speech, or cognitive impairments that make a phone call difficult under pressure
- Schools and early years: deaf pupils, children with speech and language differences, or staff working with non-verbal young people
- Construction and remote work sites: situations where loud environments, restricted movement, or a genuine threat could make speaking aloud dangerous
- Hospitality and retail: staff who may witness a crime and cannot safely speak
- Anyone working alone: a medical emergency where you are conscious but cannot vocalise
There are also situations that have nothing to do with disability. A domestic violence situation where making a sound could put someone in further danger. A break-in where speaking could alert an intruder. A witnessed incident in a crowded space with too much background noise to be understood on a call. The service has been used across all of these scenarios since it launched.
How Do You Register?
Registration is simple and takes about two minutes. You must do it before an emergency happens. You cannot register in the moment.
| How to Register for Emergency SMS Step 1: Text the word ‘register’ to 999 Step 2: Read the automatic reply carefully Step 3: Reply with ‘yes’ to confirm Step 4: You will receive a confirmation text. You are now registered. To check whether your number is registered, text ‘register’ to 999 again. You will receive a message confirming your status. If registration does not complete, contact your mobile network provider to confirm they support the service. |
If you change your mobile number, you need to register again. The registration is tied to the number, not the phone.
What Should You Include in Your Text?
When you text 999 in an emergency, keep your message clear and as specific as possible. The relay assistant needs to be able to pass your message to the operator quickly and accurately.
Relay UK recommends structuring your text to cover three things:
- Which service do you need: ambulance, police, fire, or coastguard
- What is happening: a brief description of the emergency
- Where you are: the most precise location you can give, including road name, town, and any nearby landmarks or a house number
An example from Relay UK’s guidance runs something like: ‘Ambulance. A man having a heart attack. Outside Nibbles Pizza. Glossop Road Sheffield S10.’
Short. Direct. Specific. Do not assume your message has been received until you get a reply. If you do not receive a reply within three minutes, send the message again.
Important Limitations to Be Aware Of
emergencySMS is a remarkable service, and it saves lives. But it is not without limitations, and it is important that people understand these before they need to rely on it.
- It takes longer than a voice call. A text conversation with a relay assistant handling the message exchange is inherently slower than speaking directly to a 999 operator. Always call if you can.
- It cannot be used from outside the UK. The service works across all UK mobile networks within UK borders only.
- Signal matters. In areas with very poor mobile coverage, text messages may struggle to send just as voice calls do. If this is a concern in your area of work, it is worth knowing the nearest location with a reliable signal.
- You must already be registered. There is no workaround for unregistered numbers. This is the single most important thing to take away from this article. Register today, while you are thinking about it.
For BSL users, there is also a separate service worth knowing about: 999 BSL, the UK’s first Emergency Video Relay Service in British Sign Language, launched in June 2022. It is available 24/7 and connects BSL users directly to a BSL interpreter who can then communicate with the 999 operator on their behalf. More information is available via the 999 BSL service directly.
Why This Belongs in Every Induction and Safety Briefing
As someone who has spent over twenty-five years in health and social care, I am genuinely baffled that emergencySMS is not standard knowledge. We teach people how to use a defibrillator. We teach the recovery position. We teach anaphylaxis protocols. But this? This barely gets a mention.
The service exists because not everyone can make a voice call. That is not a niche scenario. That is the reality for millions of people in the UK, and for many more in specific emergency situations. If one person in your team knows about this and the rest do not, you have a gap.
Add it to your induction materials. Add it to your staff handbook. Talk about it in your next team meeting. It takes two minutes to register. It could one day make all the difference.
I covered emergency SMS in a recent Emergency First Aid at Work course. One of the delegates, who works in a school, was convinced the service was only for deaf and hard-of-hearing people. That is one of the most common misconceptions I come across, and there is a lot of misleading information online that reinforces it. When I explained that anyone can register and use the service, the reaction said it all.
She told me I was the first trainer who had ever mentioned it to her. Not the first to explain it properly. The first to mention it at all. And she had been through first aid training before. That, to me, is the problem in a nutshell. A service that has been running since 2009 is still news to most people sitting in a training room in 2025.
Relevant Training from Prima Cura
Our Emergency First Aid at Work (EFAW) and First Aid at Work (FAW) courses cover the key skills your team needs to respond effectively in a real emergency. If you are in a healthcare or social care environment, our Basic Life Support and AED course is a practical, no-jargon option for teams who need to stay compliant without the full first aid qualification.
Get in touch to talk through what your team needs. We will not push you towards something that does not fit.
Call us on 0333 999 8783 or email info@primacuratraining.co.uk
Frequently Asked Questions
Can anyone text 999 in the UK, or is it only for deaf people?
The emergency SMS service was designed primarily for deaf, hard-of-hearing, and speech-impaired people. Still, it is available to anyone with a UK mobile number who has registered in advance. Anyone can register. The official advice is to use a voice call to 999 wherever possible, as it is faster. But if a voice call is not an option for any reason, a registered user can text 999.
Do I need to register before I can text 999?
Yes, without exception. You cannot use emergencySMS from an unregistered number. To register, text ‘register’ to 999, read the reply, and respond with ‘yes’. You will receive a confirmation text once you are set up. Do it now rather than waiting until you need it.
How long does it take to register for emergencySMS?
Registration takes approximately two minutes. You only need to do it once per mobile number. If you change your number, you will need to re-register. There is no cost to register and no ongoing account to manage.
Is texting 999 slower than calling?
Yes. The emergency SMS service routes messages via a relay assistant, which adds time to the exchange compared with a direct voice call. For this reason, Relay UK advises using a voice call to 999 wherever possible. Text 999 when a voice call genuinely is not an option, not as a convenience.
Can I text 999 from abroad?
No. The emergency SMS service operates within the UK only. It cannot be used from outside UK borders. If you are abroad and need emergency services, use the local emergency number for that country.
Is there a service for BSL users calling 999?
Yes. 999 BSL is a separate free service that connects British Sign Language users to a BSL interpreter who communicates with the 999 operator on their behalf. It launched in June 2022 and operates 24 hours a day, every day of the year. It requires the 999 BSL app to be downloaded in advance.
This article is written for general information purposes and reflects guidance current at the time of publication (May 2025). The emergencySMS service is operated by Relay UK and governed by Ofcom’s framework for emergency communications. Guidance on how to use the service may be updated periodically. Always refer to relayuk.bt.com for the most up-to-date registration instructions and emergency guidance. This article does not constitute legal or professional advice. Readers with specific accessibility or duty of care obligations should seek appropriate guidance for their sector.
