What do internet service providers say?
Trefor Davies, a board member at the UK's Internet Service Providers' Association (ISPA), told the BBC that the technological challenge of collating and storing such vast levels of data would be huge. Although a large amount of data about us is already collected for billing and other purposes — such as who we call and when — ISPs do not currently store detailed data on what websites we visit, or details about the emails we send. Mr Davies said: "The email stuff isn't straight forward, and neither is the web. Those aren't bits of information that traditionally we keep. We don't keep backups of deleted emails. Think of all the spam people get," Mr Davies added. "We delete it, but under the new rules would we be allowed to?"