Heating on here, although my son's radiator is off at the lockshield because he has his windows open
This is always a problem for us.
It's a conundrum, my wife and myself are quite hardy and don't/ didn't use the heating heavily, add the fact neither of us can stand the heat at night, our bedroom and landing windows will be open in all but the very very worst weathers.(closed when the heating is on of course)
So this means if we have the heating on daytime, it all goes out the windows at night, but we've become accustomed to that.
But now we have charge of two grandchildren, there's more need to have a warmer house so that complicates it a bit.
I always leave our spare bedroom window open all the time so if I wake in the night too hot ( and I invariably do)...into the spare room, quilt back, climb into an icy cold bed. Its wonderful....