Not sure how relevant this might be, but I remember reading recently about a new EU directive designed to give you more rights over your downloads. It is in the review stage at present but it, as I understand it, states that if you purchase/exchange money for a download then it is treated as "goods" (rather than arts). This means that my copy becomes mine to do with as I will, to keep, sell on, whatever.
Some people have already commented it might promote piracy or other nefarious activities but I don't think so. Copyright (and patents, though to a less extend in GB as software patents don't exist yet thank god) still protect companies products whether I own a copy or not.
For example, I recently bought a TV (a sony from a department store). The TV itself is mine to keep, sell, watch in the bath if I so wish. I don't suddenly have any extra rights to start manufacturing copies of it in my garage. The same should happen (hopefully) with software.
EDIT: Found the link I read it on
http://www.osnews.com/story/24500/Software_Industry_Lobbies_Against_EU_Consumer_Rights_Laws