Theresa May: Surveillance 'a matter of life and death'
Details of internet use in the UK will have to be stored for a year to allow police and intelligence services to access it, under government plans.
Records will include people's activity on social network sites, webmail, internet phone calls and online gaming.
Home Secretary Theresa May said the change was needed to keep up with how criminals were using new technology, and could be a matter of "life and death".