In Britain spiders can be found all year round, but the majority of species reach maturity in the autumn. This is why more of the eight-legged critters are out and about from September onwards. It's the falling temperatures that drive the spiders indoors, as they're seeking warmth. Once inside the females invariably stay put - hunkering down for the winter under the floorboards or inside a cupboard. Eager to find a mating partner, though, the males become particularly active - and it's these you'll often see scuttling about the house, on the trail of a female's scent.