Ahead of the national test, the government will be running a public information campaign to notify people that the test is taking place, including communications targeted at vulnerable groups, such as victims of domestic abuse. The campaign will also feature products in British Sign Language.
The UK Government will send a test Emergency Alert to mobile phones across the UK at around 15:00 on 7th September 2025
National Emergency Alert test to be held on 7th September - GOV.UK
