@cstanhope In theory it's not giving them much more data: I already have to give the company meter readings.
https://www.telegraph.co.uk/money/consumer-affairs/six-reasons-say-no-smart-meter/ and https://www.the-ambient.com/guides/smart-meters-uk-guide-418 persuaded me against getting a smart meter though. The former link suggests I won't save money or escape confusing bills, and the latter suggests the early standards haven't won.
It'll probably win eventually, for better or worse.