not trying to advertise here as such but for those of you with water meters ( we don't in Scotland) have you thought of using an eco egg for your washing? not only are they planet friendly, I love mine, I buy the fresh linen never tried the others, but if you have a rinse hold programme on your machine, sadly I don't, due to the way they work you can switch off your rinses and just wash and spin.
I have a worktop halogen oven and batch cook with the slow cooker etc. Helps keep the freezer full and therefore saves in 2 ways. Remember if you have gaps in your freezer you can fill the gaps with empty boxes or scrunched-up paper.
We use the plug in the wall oil-filled radiators, much more economical to use than central heating if you just want the one main room warm.