Yellow sac spider uk?

I was hoovering today when i saw a thick web about 1 inch long flat in the crevice of the walls. When i looked i saw a yellowish/brown spider with shiny oval beige body under the web. I touched it with a paper and the spider moved extreemly agressivly/fast at the paper. The spider was about half an inch big. I have looke don the net for hours now and can only find that it looks like the yellow sac spider. I did pick it up in some tissue and throw it out the window, wish i had photgraphed it now!