I have turned an electric oil-filled radiator on for Phyllis a couple of times, what with her being 97 and not running around so much as the rest of us.
So far as the central heating is concerned, we have run the boiler a couple of times when the sun hasn't done its job and heated the water in the tank and we have wanted showers, but since there have been only two mornings when temperature has dipped below 10°C, and by the time we were up between 8.30 and 9 the sun was warming everything up nicely, no. I don't anticipate putting the heating on before November. Saarfend has a very benign climate as a rule, so there isn't a lot of point.
It has been quite interesting talking to my daughter in Melbourne. They tend not to have double glazing or central heating down there, because it's generally lots warmer than here, but they do get occasional cold, miserable days and I think she tends to suffer on these. They are well and truly into spring at the moment though so she is quite happy.