HI folks!
This was about 5mm long, taken on 19th February 2009. It was crawling through a loop pile carpet near my back door, heading underneath a low coffee table (plant stand!) for cover. When I tried to put it on the tiled floor to get better pics it sprung about 3 inches to get back to cover!
I found a few pics which suggest this is, or for now called, Orchesella villosa.
Janet