We are dependent on oil, and the price this autumn was mind-blowing. So we have put heavy curtains on front entrance from enclosed porch- and between parts of the house we only use when having visitors, and only heat living kitchen, lounge and OH's office next to it. Our bedrooms are not heated, and are at 15C- but that is fine with warm duvets and blanket on top. And we are using our very efficient amazing wood burner a lot more, despite wood also going up in price. We have solar panels for hot water, which really help. We do heat our bathroom with small efficient electric heater, which I put on when I get up in the middle of the night for a piddle. Planning to insulate it better for next winter, ie tiling over the top of tiles walls and floors with insulation in between- and new cladding for ceiling on top of existent, with insulation in between. It is a very large room, so can afford to take up a bit more space with insulation.