What kit do I need for 2 boiler house?

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Hello. I have an old cottage with a new extension part. There are 2 modern Worcester boilers with wireless thermostats. One boiler does the old part of the house, one boiler does the new part. We have underfloor heating in the kitchen area that has a TRV located in the boiler cupboard which seems a bit naff. I’ve started off buying the wireless starter kit which I was initially going to connect to the first boiler that does the underfloor as well as most of the upstairs, what else so I need to be able to control at least the kitchen underfloor independently from the radiators. Thanks