Are you in credit or debit on the account? Do you know how many units of G&E you use per year to work out whether the £250 pm is reasonable. Many providers are setting DDs too high to contribute towards higher winter 2022 prices, but we now know we're getting the £400, which will help.
But you need to look at what you are heating. Most other uses are a drop in the ocean in comparison, unless perhaps you have gaming PCs running for hours at a time.
Shower - if electric, costs about £3 an hour to run. How many showers per day, how long are people in.
4 people each having one 10 minute shower a day could cost about £60 pm, just on showering. Plus many on MN report a lot more showering than that.
What's your heating and insulation like? Can you lower the temperature and make sure people are wearing socks and jumpers rather than heating to t-shirt weather. Also use a timer and only heat when you are in, and never in the summer, at night or when you are out.
What cooking do you do? If you use the oven a lot for things like fish fingers, chips etc, an air fryer could use less electricity. Likewise a slow cooker for casseroles.
Finally laundry - do you wear clothes until they are dirty, fill the machine and use the long cycles which use less energy or are you washing everything daily on the quick wash, which uses more energy and has a smaller load, so needs more cycles too.