Single Zone UFH addition to main system wiring

[DIYTony]

Advice needed please:

I have an UFH installation as part of my main CH system. The UFH will never be required in isolation to HW or main CH, therefore keen to wire it completely independently of boiler and main wiring.

All I want to achieve is the following:

A new Room stat (in the location of the UFH where there is no CH) to control a 2 port zone valve and circulation pump.......I have mains supply available from a spur.

Thanks in advance