Keeping your home warm / heating / energy crisis / insulation etc

Some other stuff we have/are doing;
We’ve got heavy weight close fitting Roman blinds in all the windows (thanks to the MiL a curtain maker)
The side wall has 2 windows on it and in summer the sun hits it and melts stuff on the coffee table and in winter it gets the full blast of our icy winds, so they are getting barn style exterior sliding shutters.
When I insulated the lofts I picked up every piece of ‘king span’ I saw in skips, by the side of the road etc and put that between the joists before installing rock wool. I also picked up discarded bits of pipe insulation to thrown up there as well. You can’t have too much up there. Just as long as you let the air circulate around the edges. I also decided that we wouldn’t be using the area for storage so just put the new rolls over the boarded out bits of loft. The air gap helps even more with keeping the warmth out.
Even though the hot water tank is fully insulated inside it’s still got a tank jacket on as the out side still gets warm, sure it’s not hot, but it was something like £10 from the plumb centre because it had a rip in it.
When we fitted out the kitchen I wish we’d used concrete or stone for the worktops as they would store heat from the oven better than the oak we have.
I’m trying to convince Liz that a big concrete coffee table in front of the fire is a good idea, but she’s not having it. My other idea of a large fish tank is also meeting a stony face (Thermal mass baby)
I also want to put on a storm porch. I’d like to glaze it fully, but even an open sided one would help to stop the cold coming in when you open the door.

I’d love solar or wind, but we are surrounded be massive oak trees so that’s a none starter.

Thanks for reading my musings.