Some interesting replies .
I've just fitted a smart thermostat onto our oil boiler which gives much more control to our CH system.
One of the unfortunate side effects of my wife's recent stroke is that her left side always "feels " cold although her body is at an equal temp. It's just an issue with her brain's calibration of the skin temp. sensors .
The smart system allows her to turn on /increase /decrease /switch off the CH system wherever she is in the house .
It's been particularly cold here recently , coldest for 11 years , so both our multi fuel stoves have been roaring recently but normally one is sufficient
I'm burning seasoned oak that I cut and split last year along with smokeless nuggets . Real dirty coal is unobtainable here so I was concerned that the nuggets would be a waste of money but have been pleasantly surprised with their heat and burn time .
We are also using some good thermal underwear after discarding other cheaper useless items that were bought in haste ,and warm woolen throws .
Sheilagh got some all over head to toe blankety thingy with a hood but I drew the line at that .........
Generally the thermostat hovers between 19-22 but due to the use of the stoves it's on and off during the day depending how Sheilagh feels and is switched off at night as the residual heat from the stoves keep the house warm until morning.
The one great advantage is that all our heating fuels , timber,coal and oil are paid upfront so no nasty surprise bills drop through the mail.
I really feel sympathy for those that do not have that advantage .
Real cold is a miserable thing to have to endure and I'm extremely grateful that we can avoid it .