Shame they can't swim, it would be good to see them reintroduced to the UK.
(Edit, this is an april fools, shit)
the official position is: https://www.gov.scot/publications/foi-202500453124/
Which given how much of the private land in scotland is owned for deer or grouse shooting, that seems logical.
Your link might have been wishful thinking by the wilderness society boosting an unconfirmed hearsay, or perhaps it was true but the few wolves mentioned didn't flourish.
eg: (2025) - Scientists want to release 160 wolves in Scotland... https://www.the-independent.com/news/uk/home-news/uk-160-wol...
Actually in Kent there's a park where they are reintroducing European Bison, and alongside them some Elk. I mean it is a fenced off area experiment.
There are so many deer around here now, they're asking people to hunt them and trying to start a taste for venison.