This is an interesting read.
No prizes for guessing the country with the worst insulated homes.
And yes it gets damn cold in certain parts of Germany, even more than here sometimes, which begs the question, what have they done that we haven't?
https://www.euronews.com/green/2022/12/ ... ated-homes
Apparently these are selling like crazy in UK - which probably explains why we don't bother with insulation.
https://www.dunelm.com/product/ohs-elec ... n_id=78888