Regarding the cold up there, I remember a photo in a newspaper decades ago of tons of icicles hanging off a building after the fire brigade had hosed it all down after a fire.
Another coincidence is that I sent my plant photos to my sister in Northern England and she said exactly the same as you about indoor plants.
And really, who listens to that orange scrotum anyway ? I don't follow much politics but for some reason since 2016 I have followed yours. I have never hated a person more than my hatred for him. Here's hoping they all get what they deserve but I won't hold my breath.
Maybe you should get a heated greenhouse. Oh and your house sounds nice, however as you said a lot of work. Cheers.