Get a smart meter and find out what really uses power.
Personally I don’t worry too much about water usage, as we live in a very wet place and I try to focus my energy on the max carbon stuff. But saying that, hot water is a big use of energy.
My top tips are to reduce the amount of stuff you do. Also because I’m lazy!
Hoover less.
Wash clothes only when needed, especially outer layers. Wash bedding and towels less. Air dry outdoors if possible, even for an hour.
Have a strip wash in the bath rather than a shower if you don’t need one.
When you’re using the oven, cook other food like roast veg for a soup or roast chicken to eat cold for the next day.
Experiment with heating settings. At this time of year try turning it off but having a small heater in your bedroom on a timer for the mornings. The rest of the house will heat up soon. Use curtains to keep the heat in - open on sunny days and closed in shade/dark.
Close doors for unused rooms. Stop off draughts. Only heat the room you are using (I grew up with open fires!).
Dressing gowns! If you can wander around in your pjs in the morning then you’re probably using too much heat, or you’re tough like my kids.
This has been good for me- realised how many of these I have let slip over the years. Following with interest...