It shouldn't be too hard to find one: just ring up your local council, and ask if they have a PC Recycling program: if they do, you'll find one there.
sorry for the double post but see PC recycling programs what are they i know you can get rid of an old pc that way but can you get stuff for free from it or what?
i know that some company's looking to upgrade give pcs away for cheap because they have depreciated in value so much they make a profit from selling it so cheap. My bro had a job a few years ago and they just sold all the dell pcs to the employees for like £3 or something unfortunately he couldnt get one because he used to ride the bus to work and couldnt get one home.