Family Pholcidae (Cellar spiders)
Body length 7-10 mm.
This spider has distinctively long slender legs. The carapace and abdomen are pale greyish-brown. It commonly enters houses, and will vibrate rapidly in its web if disturbed.
The females carry their fairly large and visible eggs in their jaws. When it is disturbed it will vibrate its body rapidly in its web, becoming a blur to put off predators. Seen all year round.
It predates on other insects, catching them in its sticky webs, and then grasping them with its long spindly legs.
Usually found upside down in a loose, almost formless web in sheds, garages, and other outbuildings, houses and always indoors. Also found in caves. Commoner in warmer climes and fairly widespread. It is not native to the UK, and may have been introduced through trade. It has become more widely distributed over the last 30 years.