Earlier quoted context omitted.
(UK here) This is all the usual advice, which works for a few days, but during a period of over a week of high temperatures, there's nothing you can do. The sun will eventually heat up every part of the house and turn it into a radiator. Even when night time temperatures drop to 17c, I have my have windows open at 10pm with a decent cross-wind, my bedroom temperature may drop from 26c to 24c after 2-3 hours, but if I…
Scotland here - have heard people from London talking about moving here for the weather.. which isn't something I ever expected to hear! Was 10C this morning when I went out to walk my dog, in a t-shirt and shorts!
I hope you didn't get heatstroke ! XD