I understand climate change probably as good as anyone on here, as it was part of my job until I retired, and there's a lot of scare mongering, the UK will be perfectly habitable in 100 years, it won't be ideal, but it will still be habitable.
There's a huge debate about amoc within the climate change environment, not to mention if it happens at all, but it's unlikely to make Canada or Greenland the only habitable places, it might not make the UK any more hospitable, nor russia.
Whatever happens it will be disruptive to populations everywhere, but that should be obvious to us all by now.
Anyway, all a bit "off topic" in this thread.