Four flats with storage heaters facing RTS shutdown....

We’ve had three meter change appointments, for two flats, with four needing upgrading in Oxford. All have a second night heating circuit switched from RTS. I’d love some help !. One OVO meter was changed successfully in a basement flat, (thanks OVO). For one flat above this, which should therefore have better radio reception, two installers have come, said a smart meter wont work, and haven’t brought an option. Appointments are taking a month at a time.

So my first question is: if they install the ‘Legacy Meter’ offered, can it definately switch the second circuit night rate power on/off overnight with no radio ?. Cant find this info on the forum anywhere.

Meanwhile, the fourth flat uses Octopus, who have just not replied to 2 requests, and I’m not able to phone them as a landlord. While the third flat (basement) has 2 phases, so perhaps needs a different team of installers, equipped correctly ?…..any input very welcome, thanks !