> 100 or more redundancies - the consultation must start at least 45 days before any dismissals take effect

https://www.gov.uk/redundancy-your-rights/consultation

If you want to have similar laws, you need to lobby your representatives, and get them to follow California's example, which introduced the Cal-WARN act:

> “an employer may not order a mass layoff, relocation, or termination at a covered establishment unless, 60 days before the order takes effect, the employer gives written notice of the order”

From https://www.dir.ca.gov/dlse/Cal-WARNAct.html

But as others have said, it's not as strong as the UK laws, so it just becomes a de-facto notice period instead. It's still progress though.

* Although not one I've ever heard of, which is a little suspicious.

For European standards, it's not only cold but would be absurdly illegal.