Prime Minister David Cameron said the new laws to be passed through parliament that will allow police and MI5 to access mobile and internet data is essentail and will enable security services to maintain their existing level of capabilities.
It is the first duty of government to protect our national security and to act quickly when that security is compromised. As events in Iraq and Syria demonstrate, now is not the time to be scaling back on our ability to keep our people safe.
The Government has been forced to act as a result of a European Court of Justice ruling in April that a EU data retention directive implemented in 2009 was invalid because it interferes with the fundamental right to respect for private life.
The new laws come after Mr Cameron and his coalition deputy Nick Clegg struck a deal on the on the measures, after the Liberal Democrats blocked plans for a "snooper's charter".