The nationwide testing of the emergency alert, which could be used to warn people about danger nearby in the future, is expected to happen around 3pm on 7 September.

In September, millions of Brits will receive an emergency alert on their mobile phones as part of a nationwide test run by the government. The objective is to assess the Government's Emergency Alert system, first launched in 2023, which is used to warn the public about imminent life-threatening situations, including severe weather events.

Mobile phones in the UK will be sent an emergency alert as the government tests the nationwide system for the second time. Here is what you need to know.