This is one of the spiders that come running across the living-room floor when you are watching Star Trek...and suddenly everybody is standing on a chair...boy can they be big...at least for the UK.
The female of the above can reach a size of 18 mm, with the male being about 4 mm smaller. It is mainly found in houses and gardens but also under logs and holes in banks especially in southern England.
Males and females live together for some weeks after mating until the male dies, when his remains will be eaten by the female. The egg sac is spherical and covered with a thin layer of soil or wood-chips (depends on habitat) or, if these materials are not available, then with remains of prey etc. This layer is often covered with another layer of silk, and the whole is placed within the web structure.
AND THERE'S TWO OF THE FUCKERS STALKING ME, RIGHT NOW!!!!