Do you have any batteries for home, if not id switch to octopus and go on their fixed tariff (no exit fee and going to be cheaper than the variable tariff) for a week or two to get some baseline data and then have a look at this
Offers recommendations on the cheapest electricity and gas tariff based on your actual energy usage figures.
www.octopriceuk.app
It will compare prices of various tariffs they offer, if you fancy a look they offer a "Try it out" mode where it uses dummy data to provide an example of what it does.