The UK government is carrying out a national test of 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.