What is this "central heating" of which you speak? A few notes about life in an end-of-terrace about 200 or 300 years old.
Along with a couple of rarely-used storage heaters upstairs, I have a cast-iron wood burner as usually the sole heat source, and when that gets lit it stays lit until the spring. Lighting these things on odd evenings and then letting them go out is a waste of fuel. The proper cast-iron ones have a high thermal mass, and take an age to get hot, but when they do, then just a glowing layer of charcoal fuelled by the tiniest amount of oxygen can keep them emitting heat for hours, as long as you don't let the embers completely die. But if you do let them go out, then you have to start shovelling in the wood to start the process all over again.
Similarly the walls here are solid and the best part of a couple of feet thick, so the same principle of high thermal mass applies: in the summer the walls retain so much heat that you put on clothes when you enter the house and take them off to leave. In the autumn the walls gradually disperse daytime heat during the evenings, until the tipping point eventually arrives, and the wood burner gets lit. Last year the magic date didn't arrive until November, following that extraordinary 2014 Halloween.
The key point about the walls is to keep them dry, since dampness conducts heat away (it's the same effect as wearing damp clothes). So every room has one window ajar all year round, draughts are encouraged and the walls are limed rather than cemented or gypsumed. I hate insulation in general. When I bought the place, the attic was lined with layers of sheep wool that were soaking wet with condensation dripping from the cold roof. A couple of filthy days removing that ensured that the attic never now gets cold enough to allow condensation to form and the bedrooms underneath feel drier and warmer. As a bonus the bedrooms are cool and comfortable in summer, while the attic is like an oven, as it should be, drying out any winter dampness. And the rafters are no longer covered in mould.
2 miles west of Taunton, 32 m asl, where "milder air moving in from the west" becomes SNOWMAGEDDON.
Well, two or three times a decade it does, anyway.