I had some black widow spiders in my kitchen although there not native to the UK there has been an out burst of them in the south of the UK recently. The black widow spiders never bothered me and those don't freak me out as there not big and creepy looking and keep out of my way and if a few step out of line then I grab a container and capture them, then drown them in very hot water lol I know there bite can be bad. The female ones however aren't venomous just the male ones which are the ones that have red spots on them with a black shiny body.