dannyk13,
Terrorists' internet traffic IS being monitored by GCHQ. And they will collect terrorists internet browsing history on the people they are watching. So the notion that terrorists will function without impedement if this law is not enacted, is completely rubbish, and a dubious argument.
The new law is a blanket surveilance of everyone in the UK, amassing huge amounts of person information. The information will not be restricted to people hunting terrorists, but will be available to your local council, Inland Revenue, the Ambulance Service and a long list of other none security agencies.