Paul

Eventually you'll have no choice, but atm, you can still choose not to have one.

The hype around RTS meters is a little misleading.
They will not stop working, they will stop switching between their day/night registers, and log all your units on the same one (probably daytime).

So you must at the very least make sure you move to a single rate tariff, which charges day and night at the same rate.

Additionally, some of these meters actually controlled heating/hot water circuits, so they were only powered up on the night rate.
In those cases you will need to (must) get your meter changed, otherwise you'll be stuck with them either always on or more likely, always off.