Yes this is the best kept 'secret' in the UK power market right now. It's basically half price. I was expecting prices to spike over the winter a bit and reduce the savings but they haven't.
Paying approx 15p/kWh for electricity and 4p/kWh for gas, which is about half of the price cap rates.
Edit; Oh, I see, I need a smart meter to get Tracker. I’m a renter so not sure about the process for getting a smart meter there