Not enough information, and I really don't want to hunt out the wiring diagrams for either Tado V3 or Worcester greenstar Mk2 oil combi, and I know from the Worcester oil boiler I have, there have been many versions with the same group name.
Oh, it seems @CountryFan has a crystal ball, or more to point has assumed wired in the same way as some others he has wired. My mind tells me, a wireless thermostat does not need wiring, this is why it is called wireless, the first wireless thermostat I fitted to my boiler needed a hub connecting as well, once that was fitted, any extra wireless thermostats are connected by using my phone, wirelessly.
I look at the for the boiler and when I saw EMS bus connections I realised it was out of my league
I will guess there are converter modules etc. But I can't really help.
Yes, said tongue in cheek, however, there are some boilers with the hub built in, some with 24 volt controls often miss labelled as low voltage, when we know ISO define it as extra low voltage.
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