thermostat

So I have just bought a Nest 3rd Gen thermostat and just want to make sure I'm not missing anything. I have a Bosch Worcester Greenstar 35CDi boiler in the loft with a unvented water cylinder. From the loft cables run down to a Honeywell ST9400S programmer under my stairs which is currently...

Right my good friends, just after some advice (or rather direction). I have a programmable room thermostat which for all intent and purpose is buggered. I've purposely been holding off getting a new one until I replaced my boiler, however that doesn't seem to be anytime soon. That said, missus...