[javiermaestro]

Sure, it's annecdata... but just come to London. All of the old housing from the 70s or before (most of Z1-Z2) is single pane. Also, go search in Zoopla for double-glazing... landlords mark it as an extra for a reason (unless it's a new development, in which case it will be double glazing).

Well, I've talked to people and been to quite a few places in the UK, Scotland, etc. I know many people living in London, the UK and Scotland. We all agree. I'm pretty sure it's the same all over the UK

And for the rental prices that you pay here, it's pretty shameful the state of the houses, windows included.

[k-mcgrady]

Interesting. Maybe it depends on where the property is located within the UK. There was a big double glazing push in Northern Ireland in the 90's and I can't remember the last time I was in a property without it. I've rented in London (Z2) a few times and haven't come across an issue yet but I may have been getting lucky. The different heating requirements between Southern UK and Northern are pretty astounding so that might have something to do with it. I haven't used the heating in my London flat in about 4 weeks now and throughout the winter 4 hours a day was plenty. In NI I would have been using it for another couple of months at least and almost constant during winter.