I set our thermostat to 14 degrees earlier this year to stop the heating kicking in (and it hasn’t). Thermostat has been living on my computer desk since then, situated under the stairs, with desktop tower, two monitors, and a NAS which might fool it into thinking it’s warmer than it is. Probably. Gave up on shorts last week, back to jeans, my knees get cold!
Down here in the SE, terrace (insulation could be better), not expecting to need heating for a few more weeks at least. I wasn’t worried last year about the cost of heating, we’d put it up when we got a bit cold, to a max of probably 22 degrees. This year I want to avoid going past 19 degrees. Will keep it at 16 for as long as possible. I’ll just exercise in the house more if I get cold, flap my arms about a bit, star jumps etc, lol. Will keep me from browsing shite on the internet for hours on end in the evenings.