We are in a fairly big detached 3 bed bungalow (so we have lots of external walls) with an extra 2 bedrooms upstairs, we have cavity wall insulation, a stack of insulation in the small loft area and double glazing.
We were paying £40 a Month for Electricity and we built up quite a credit amount, that has now been used up and our new Monthly amount is £119. Hopefully this will prove to be far too much and will drop back down. We fixed a 3 yr fixed rate with OVO just before this all kicked off last year.
Our heating and hot water is Oil and that is £120 a month. I’d say you are doing very well!
I will stop using the tumble dryer as the weather improves, but we have a fair amount of electrical equipment and the oven is on most days for cooking, so we will have to cut back on our usage.