"Back in 2012, the government created a legal obligation for energy suppliers to make sure they completed the rollout of smart meters by the end of 2019. Subsequently, it pushed back the deadline three times, first to the end of 2020, then 2024, and then 2025. As of February 2023, the government launched a consultation on plans to have smart meters installed in 80 percent of homes and 73 percent of small businesses by the end of 2025."
They should, by now, realise that there's a substantial customer resistance, that they've got about as far as they're getting, that it was a Bad Idea and they might as well quit while they're behind.
I suppose what stops this from dawning on them is that it looks just like so many other HMG projects - behind schedule and over budget - that they think that with time and budget it will get there in the end if they really want it.