Can't see a thread about this anywhere so apologies if I'm repeating.
An article was sent to me at work this week warning that the planned Emergency Alert Test this Sunday May ring on phones that victims of abuse and DV keep in secret, thereby alerting abusers to its presence.
There is a way to disable the alert on phones. Putting them to silent will be overridden.
Link here:
news.sky.com/story/amp/how-to-turn-off-uk-wide-emergency-alert-which-could-put-domestic-abuse-survivors-at-risk-12859913