Multiple Thermostats

Evening All

Looking for some use case ideas. Moving into a new house with 2 zone central heating. I am, going with 2 nests… I am going to use nest manager!

So - zone 1 is house, zone 2 is bedrooms… Easy so far!

However, I want to put z-wave radiator controllers in 4 of the bedrooms that guests will use. What I want to do is have a wireless zwave thermostat on the wall to control the radiator in that room (only) and using CORE (most likely) call on nest to fire up zone 2 if needed.

So question is - uk based… any recomendations on in room thermostats that could work? There will also be a fibaro multi sensor in each room too and a smartthings door sensor (both do temp).

Any help much appreciated.