
05/09/2025
On Sunday 7 September 2025, the government will be testing the UK Emergency Alerts system.
This means most mobile phones will make a loud siren-like sound, vibrate, and show a message on screen.
It’s only a test – you don’t need to do anything.
The test alert is designed to warn people in real life emergencies, like severe weather or danger to life.
If you, or someone you know, might be worried by the sound or message, please let them know in advance so they feel prepared.
We’ve attached an Easy Read guide below to help explain what’s happening.
Find out more about emergency alerts here: https://www.gov.uk/alerts