The UK Government are going to be testing their new Emergency Alert system based off systems used in countries such as the United States.
There is a BBC Article about this here.
This system means that in the event of an emergency situation, such a natural disasters, every person nearby with a functioning mobile phone will get immediately alerted.
This new system is set for testing on 23rd April 2023 at 3pm sometime in the evening, but currently there is no specific time set
The idea of having a “siren-like noise” go off “sometime in the evening” is going to be potentially anxiety inducing for many Autistic (and also Allistic) people across the country. There are steps that you can take to reduce this anxiety. If you would simply not like to receive the “test” but would like to be alerted in a real emergency, you can put your phone to “airplane” mode or switch it off on the evening of the 23rd.
If you would never like to receive these alerts, even in a real emergency, there here is how:
Please be sure to share this information with all friends and family, whether Autistic or not, as it’s important that we’re all well informed and prepared.
Autistic Nottingham 
Great post, really clear, nice graphics! Will put it in my diary
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On Sunday 23rd April at 15:00 a National Welcome Message will be issued in relation to Emergency Alerts.
This will see 4G and 5G handsets across the country receive an Emergency Alert, in order to make them aware of the capability and what receiving an Emergency Alert will look and sound like.
More information on what this message will look like can be seen on the GOV.UK Emergency Alerts page or by viewing the YouTube video
https://www.gov.uk/alerts
http://www.youtu.be/mvzm-ocreu8
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