Police are to get powers to force internet firms to hand over details that could help identify suspected terrorists and paedophiles.
The Anti-Terrorism and Security Bill will oblige internet service providers (ISPs) to retain information linking Internet Protocol (IP) addresses to individual users.
Home Secretary Theresa May said the measure would boost national security – but again complained that Liberal Democrats were blocking further steps.
“Loss of the capabilities on which we have always relied is the great danger we face,” Mrs May said. “The Bill provides the opportunity to resolve the very real problems that exist around IP resolution and is a step in the right direction towards bridging the overall communications data capability gap.