National Emergency Alert Test – Sunday 7th September 2025
The UK Government will be testing the Emergency Alerts system on Sunday 7th September at 3pm. Your phone is likely to make a loud noise even if it's on silent.
Published: 2 September 2025
The UK Government will be testing the Emergency Alerts system on Sunday 7th September at 3pm. Your phone is likely to make a loud noise even if it’s on silent.
What is the Emergency Alerts test?
On Sunday 7 September 2025 at 3pm, the government will carry out a national test of the Emergency Alerts system. This means most mobile phones and tablets across the UK will receive a test message, accompanied by a loud siren-like sound and vibration that will last for about 10 seconds.
The message you receive will clearly state that this is a test and that no action is required on your part. The alert will come through even if your device is set to silent mode, which is an important feature of the system designed to ensure people receive warnings in genuine emergencies.