U.K. lawmakers say the country's spies intercept Britons' communications data in bulk — but not enough for it to count as blanket surveillance or "reading everyone's emails."

Parliament's Intelligence and Security Committee on Thursday made the most detailed public disclosure yet of Britain's electronic snooping abilities.

It said the electronic spy agency GCHQ accesses traffic on "a very small percentage" of the Internet. The report said a small portion of that is collected and even less is read.

The report concludes that spy agencies do not seek to break the law, but that the legal framework should be simplified into a single act of Parliament.The agencies' surveillance powers have been under scrutiny since former NSA contractor Edward Snowden leaked details of spies' ability to monitor phone and online communications.