4 bed house.
In winter we turn the heating off at night and set the heating to 15 if we are out.
If chilly and we are in, heating is put up to 20.
If you use a dryer for your clothes, put them on an extra spin in the washing machine first, before placing in the dryer.
Dishwasher is usually set to an economical short wash, unless there are many dishes that are extremely greasy and need of a longer wash - if just a couple are like that, soak first / hand wash.
Never, ever leave anything on standby, including the TV. Only one TV switched on at any time. Switch off if not being used, the same goes for the computer.
Some things are cooked in the air fryer, rather than putting the oven on for say, one item.
Boil the amount of water you need in the kettle, rather than fill it just for a single coffee.
We do have cavity wall insulation and well insulated, quality windows and doors, which have made a big difference.
Check your energy tariff.