We had to have the smart meter as part of the reduced tariff(steady Donald) I switched to. I’ve never even plugged in the separate meter they give you to track your usage, as we have a very well insulated house and use energy as and when needed. As they’ve now provided two smart meters that don’t work I look forward to my free fifty quid later this year that they’re obliged to cough up, along with the £25 and £20 I’ve already had for switching tariffs in the last year, c/o Martin Lewis.