Assuming you have low energy bulbs, lights are not the problem, so don't let yourself be distracted by that. (If you don't then get them changed, fast).
Yes, you are an extremely high user, though obviously a lot of that will be down to the heat pump and the car (January is a very high month for heating costs).
You need to learn how much energy the appliances in your home cost to run, ie how many watts/ kilowatts they use. A kilowatt hour ( kWh) is the standard unit of measurement for electricity, and is the amount an appliance drawing a thousand watts consistently would use in an hour. You will see on your bill that you are charged per kWh you use. (Sorry if you understand that, but a lot of people don't and it's good to get back to basics on these matters. Something is causing this).
You can buy a smart plug that will measure the energy each appliance is drawing down, that sounds like it would be a very good investment in your case.
Things that generate heat are the things that use most electricity, followed by things that create motion.
I am not an expert on heat pumps, someone else will be along to advise you on that, but you state that your oven is on in the evenings. Is that every night? Are you one of those families who cook things at different times for different members? Do you put it on just for one item? If so, that needs to stop if you want to reduce your bills.
Get yourself an air fryer, or even a couple, if you would use a small one just for individual items, and only use the oven when you will fill it. Eg if I put my oven on, I might put in a pizza for tea, a batch of baked potatoes for the next few days, 24 sausages for the freezer, a batch of roasties or a big M&S cottage pie for the next day, and so on. It saves a LOT of energy (and time) if you do it consistently.
Do you have an electric shower? They also use a lot of energy.
Start researching how much your individual appliances use ( that particular model). Do you have a lot of fridges and freezers? After the energy crisis of 2022, When we were being threatened with gas and electricity bills of £9,000 per annum, we did a thorough energy audit of our house. We were able to cut our consumption of gas and electricity by 50% during the winter of 2022/23.
As part of that we cut the number of fridges and freezers we had from five to two. That alone cut 10% of our annual electricity usage. Fridges and freezers don't use a lot of electricity per hour if you look at them individually, but they are one of the few appliances in your home that are run 365 days a year 24 hours a day. It adds up. Also, old fridges and freezers use a lot more energy than more modern appliances.
As others have said, check if you have an electric immersion heater on 24/7.
You need to turn detective, OP, to get to the bottom of this. The good news is, you have an awful lot of slack to cut into. Good luck.