As usual Jeff is right he can grass you up, tread carefully.
When we moved some years ago we on to a meter for the first time. Our bills were lower and it was a lot cheaper. We told our business neighbpours, who despite being well todo were/are very penny pinching and tight. My wife enjoyed telling them we were saving money, eventually taking the bills in because they were disbelieved.
Anyway, the tight git did go on a meter, but amongst the bumpf when he was reading up on it he spotted that if you have a swimming pool you mustbe on a meter(it's an offence). He knew that his neighbour who was forever lending him things and helping him out in various ways, A had a swimming pool, and B didn't have a meter. You can guess the rest.
The same couple had an aupair once, his wife used to go into her room and read her diary when she was out so they would know what she was up to and thinking.'today I had a bath in the big green bath it was lovely and hot."
In the school holidays they made her take their son (about 9 at the time) into town (liecester) and go to McDonalds, except that she had make sandwichs for herself and eat them while the kid tucked in.