clch - energy bill savings [late 2021]

Given just how much gas prices in particular have increased recently [and I use LPG, which is even more costly] I'm not sure how much help these suggestions will be to me.

we already have the thermostat down to as low as we can - and on a timer to reduce use.
we already have almost all lights as LEDs
we already have a small dishwasher and use the washing machine economically. In the winter we do need to use a dryer.
we could do a re-draught-proofing exercise, but that would have a minimal benefit. All windows [but one room] are already double-glazed.
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