The UK government is testing the Emergency Alerts system on Sunday, 7 September 2025, at 3 pm.
Your mobile phone or tablet will vibrate and make a loud siren-like sound, even if it’s set on silent. The alert message will confirm this is a test and that you do not need to take any further action.
Regular testing ensures the system is functioning correctly, should it need to be used in a life-threatening emergency.
You can opt out of the Emergency Alerts, including the national test, but you should keep them switched on for your own safety.
Emergency Alerts will warn you via your mobile or tablet if there’s a life-threatening emergency nearby. Only the government and the emergency services can send them.
There are simple and effective steps we can all take to be more prepared for an emergency. Visit gov.uk/prepare for advice on how you can prepare.
If you would like to opt out of receiving emergency alerts, click here: Opting out of emergency alerts – GOV.UK
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