Yes, you can send a text message to 999 in the UK, but only if you have pre-registered your mobile number for the emergencySMS service. Without registration, your message will not reach emergency services.
How texting 999 works
The emergencySMS system allows people to contact 999 by text when they cannot make a voice call. This is especially important for individuals who are deaf, hard of hearing, or have a speech impairment. It also helps people in dangerous situations where speaking could put them at greater risk.
When you send a text to 999, it is routed through a relay system managed by Relay UK. A trained operator reads your message and contacts the appropriate emergency service on your behalf. You can then continue the conversation by text, but response times may be slower than with a voice call.
How to register for emergencySMS
Registration is required and must be done before an emergency occurs. To register, open your messaging app and send the word 'REGISTER' to 999. You will receive a reply with information about the service. Reply with 'YES' to confirm. You will get a final message confirming your registration.
This process links your mobile number to the emergencySMS database. If you change your phone, SIM card, or network provider, you must repeat the registration process. Registration is tied to your specific number and device, not your identity.
What to do in an emergency
If you need help and cannot speak, send a text to 999. Be clear and include three key details: which service you need (police, ambulance, fire, or coastguard), what is happening, and your exact location. Keep your messages short and factual.
Do not send photos, emojis, or long descriptions. The relay operator will respond by text, so be ready to answer follow-up questions. Remember that texting takes longer than calling, so only use it when necessary.
Limitations and common mistakes
Many people assume they can text 999 from any phone at any time. This is not true. If your number is not registered, your message will not be processed. There is no automatic fallback or warning system.
Other messaging apps like WhatsApp or Facebook Messenger do not connect to emergency services. Only SMS texts to 999 work, and only if registered. Also, poor signal can block texts just like calls, so the service is not guaranteed in remote areas.
Keeping your registration active
It’s a good idea to check your registration status occasionally, especially after getting a new phone or changing networks. Simply text 'REGISTER' to 999 again. If you are still registered, you will get a message confirming this. If not, you will need to complete the process again by replying 'YES'.
Make sure family members or friends who rely on text communication also register. This service can be a lifeline, but only if set up in advance.