National Test of the UK Emergency Alerts System- Sunday 7 September

The UK Government will be testing the Emergency Alerts system on Sunday, 7 September at 3pm.

During the test, mobile phones will vibrate and make a loud siren sound for roughly ten seconds, even if they are set to silent. A message will also appear on phone screens, making it clear the alert is only a test. 

Regular testing ensures the system is functioning correctly, should it need to be used in a life-threatening emergency.

The UK Government is running a public information campaign to notify people that the test is taking place. As part of this, a partner toolkit is available to help increase awareness across the UK. This includes long and short form copy targeted at priority groups, social and digital assets, posters and accessible materials. 

Colleagues are also keen to utilise digital screens, signage or spaces to reach audiences. 

Opt out information

The Emergency Alerts system is an important tool for reaching the public in emergency situations. However, for those who need it, information on how to opt out (including from the test) is available on gov.uk/alerts.