Every Brit in Australia is being warned their phones, smart watches and tablets should go off at the same time later this month.

Compatible electronic devices, including phones, tablets, and smart watches will all light up and sound a siren for 10 seconds.

A message will also appear on those devices, saying: “TEST MESSAGE - AUSALERT

“This is a TEST of AusAlert, Australia's new emergency warning system. NO ACTION IS REQUIRED.

“In an actual emergency, follow the instructions in the alert to keep yourself and others safe. Visit www.ausalert.gov.au for more information.

“This message is authorised by the Australian Government.”

Anyone who receives the message does not need to do anything following the test.

In an actual emergency, the system will tell users the type of threat, where it’s located, how serious it is, what actions residents should take, and where to find out more information.

AusAlert is being touted as the best way to send reliable messages to quickly those in need of help. Due to Australia’s enormous size — being 32 times larger than the UK — the system can send targeted messages down to ‘areas as small as 160m across’.

That means individual messages can be created for the variety of natural disasters Australia faces annually.

Wildfires are a frequent occurrence in summertime across the nation whereas tropical cyclones tend to hit northern, coastal areas.

The test alert will be sent out at the following times on Monday, July 27: