Hi Paul,
Don’t worry! You won’t get a specific bill for having your new smart meter installed, but we all pay for our meters and other energy infrastructure (like pylons and gas pipes) through our energy bills, so that won’t change.
The technology in smart meters is more costly than old, ‘dumb’ meters, however, there will be significant new benefits to having smart meters. The government reckon that the average customer will save about £23 a year due to being better able to manage their consumption and there’ll be an end to estimated billing too.