In addition to tighter passport controls, new powers will be introduced to further enhance existing terrorism prevention and investigation measures (Tpims), including "stronger locational constraints", the Prime Minister has announced.
In a statement to the House of Commons, the Prime Minister also said:
Adhering to British values is not an option or a choice. It is a duty for all those who live in these islands so we will stand up for our values, we will in the end defeat this extremism and we will secure our way of life for generations to come.
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.