Not in the UK, but almost everyone I know has a landline in their house (although some may be VoIP). In a disaster scenario the cellular networks are going to be overloaded.

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perching_aix a day ago | parent [-]

and landline won't? it's also oversubscribed. pretty sure it isn't guaranteed e2e circuit switched either, and that it hasn't been for quite a while.

	▲	gumby 3 hours ago \| parent [-]
		In the US the POTS telcos have a strict availability requirement that constrains the oversubscriber ratio. It was these requirements that lead to the development of the erlang unit in queueing theory. So don’t worry about that particular issue on the POTS side. On wireless, it feels like anything goes (not really true, but by comparison it’s the Wild West)