Might be worth adding a reminder to your calendar (to reduce being startled):
"The national system for sending emergency alerts to mobile phones in the UK will be tested again this September, the government has said.
It will see compatible phones vibrate and make a siren sound for 10 seconds while displaying a message at 15:00 BST on 7 September, even if they are set to silent."
SafeLives make the same point; with another reminder of how to disable emergency alerts on your mobile for safety reasons (there is guidance for both iPhone and Android users, plus, for other mobiles and tablets):
SafeLives make the same point; with another reminder of how to disable emergency alerts on your mobile for safety reasons (there is guidance for both iPhone and Android users, plus, for other mobiles and tablets):
