The image below was of a Woodlouse Spider safely tucked up in what is referred to as a ‘Retreat’ web. In this case the silken retreat was formed between two spare roof tiles stacked one on top of the other. These spiders do not use webs to capture food.
Instead these guys hunt by night, feeding on woodlice and little else. We have actually only seen this species once in the garden, although we have seen them at the front of the house on several occasions. However there are certainly plenty of woodlice about and perhaps it has been under recorded.
Wildlife Garden 