[admars]

I used to have one, and it was quite useful to have the display in the kitchen to see current usage skyrocket up when you put kettle on etc.

the novelty soon wore off, and you use what you use as before more or less, probably liek they had to adjust water prices after water started getting metred as people wasted less.

I can't tell if I saved money as it was installed as part of move the BG using the MSE price comparison a few years ago.

the annoying this is, is they're not necessarily compatible across providers, so if/when you switch you'd need a new one installed!