The Prime Minister is trying to give the public "higher protection" by introducing "a raft" of new anti-terror powers, a security expert said.
Dr Sally Leivesley told Good Morning Britain new powers expected to be announced by David Cameron would allow the police "to be much more pre-emptive".
The PM wants to confiscate passports. But in Cardiff they want to solve extremism at it's roots - they just can't get the help to do it.
David Cameron has unveiled a series of new measures to combat the threat of terrorism.
Rumours suggesting London's Tube network will be targeted in a terrorist attack on Monday are "completely untrue", police say.