They're on the front of the bill
The formula is on the back - didn't think to look at the front...
My first bill, from January to now, I'm told will be around £100. I get it to about £15. They have all the meter readings though. I asked a mate to check my figures and he gets the same. Not sure what to make of it. Guess I'll have to wait for the bill and see how they've calculated it.