graeme_p - 11:52 am on May 16, 2010 (gmt 0)

@lammert, are you sure about that? You can buy access to UK electoral data, telephone directories list addresses (last time I looked!), and there are websites that will tell you who lives at a given address, (or find an address by occupants name), a list of other occupants, how long they have been there for, how much the house was lost sold for (if has been bought in the last few years), etc.