LamieRobertson
Not awoke
Try moving the thermostat. When I was working I always had the boiler on a timer, which worked fine for me. Once I retired I decided to switch to using the thermostat. Although it was less than 3 metres from the boiler (and on the same floor, with only a doorway between them, no wall) it didn't work. Turned out it was inexplicably in a blind spot. Moved it upstairs to the bedroom (might as well make sure I'm nice and cosy getting up and dressed in the morning!) and it works fine.
The thermostat is wired in ...and having just paid for the nest and installation there is no way I am moving it
...it’s not a big issue ...the advantages of the nest over the old thermostat far outweigh the lack of the previous boost function..it’s only one person in the house who needed it