Advice needed for reducing energy usage


So my bills just for electricity are £200 per month. Monwar at Homeshift has properly investigated etc. to check that we don’t have faulty meters or something, but it turns out that it is legit and our house is genuinely using a LOT of electricity. We feel like we live pretty normal lives (house of 3 students) but I was hoping someone could give some advice? Any easy changes we could make to reduce our usage?