Communications Data Bill 2008
The Communications Data Bill was intended to create powers to collect data concerning people's phone, e-mail and web-browsing habits for mass surveillance in the United Kingdom. The government database would have included telephone numbers dialed, the websites visited and addresses to which e-mails are sent but not the text of e-mails or recorded telephone conversations.
Source: Wikipedia — Communications Data Bill 2008 (CC BY-SA 4.0)