As the commissioner suggested, I think partly it's fed by the media in the U.K., but there are many examples of people in either telephone companies or financial institutions being paid to disclose information that is then sent in to the media to highlight the social life or the private life of celebrities, and it's a very lucrative trade. There are companies for which this seems to be the main line of business—obtaining this information—which then feeds into various uses.
On May 8th, 2007. See this statement in context.