While regional rates will make some bills higher, you have a small household in a new house, so you could almost certainly make some savings by cutting usage. Over the last few years, we have dramatically cut our annual usage although we are paying roughly the same as you. We are three adults in a Victorian terraced house.
We all work at home, so computers and screens on all day all week. Evenings are usually screens too including a PS5, so all of that probably accounts for most of our electricity usage. But, we've cut back by not using tumble drier much (airer and dehumidifier instead) and being stricter about turning off lights etc. We cook by gas, so our air fryer is about convenience rather than moneysaving, but we are less wasteful with heating. Oodies and heated throws in evenings rather than heating.