Police and intelligence services will be able to access data about people's phone calls, emails and internet usage in order to tackle crime and terrorism, under Home Office plans.

In the past, a plot might have been hatched by phone, and the security services or police could ask the phone company for information about who called who.

But the government is now concerned that potential offenders are using Facebook messages, webmail accounts, and even online games to communicate and evade detection.

Tom Symonds reports.