Test of UK Emergency Alerts System – Sunday 7th September 2025

The UK government is testing the Emergency Alerts system on Sunday 7 September 2025 at 3pm. Compatible mobile phones and tablets will receive an alert, make a loud siren-like sound and vibrate. You will not need to take any action.

The Emergency Alerts system is used to warn if there’s a danger to life nearby, including extreme weather. Regular testing ensures the system is functioning correctly, should it need to be used in a life-threatening emergency.

Emergency Alerts is a UK government system that provides warning and advice in a life threatening emergency.

The government will be running a national test of the Emergency Alerts system on Sunday 7 September 2025.

The government does not need to know your phone number or location to send you an alert.

Find out more at gov.uk/alerts