For context: I'm from Africa. Half my life has been spent in the UK and growing up in Africa, we didn't have AC unless we were in the shops. We had ceiling fans, onshore breeze from the sea, rarely a pool etc.
In the last 7-10 years, it's clear that the UK is not designed for the heat we have now in summer. This will not stop and is here to stay.
I've read several threads in the last couple of years of people in new build high rise flats who are struggling - one this week.
Ditto new build houses. I'm in a new build and upstairs where I sleep is horrific. I'm going to drag a mattress to the living room to sleep.
UK house builds are designed to retain heat - great for winter!! But not for summer.
Will add that I'm now in early menopause (formally!) so perhaps my experience of heat and sleeping is skewed
So:
AIBU: people need to suck it up and buy some fans.
YANBU: government should start a fund to subsidise and/or incentivise aircon in new and old houses (similar to what they did a few years ago for heating)
NB: please don't send me heat reduction tips, am on it and like I said, originate from Africa where 40+degrees C is normal.