The Prime Minister has laid a series of measures to try and increase national security.
David Cameron told MPs in the Commons it was “abhorrent” that British citizens who pledge allegiance elsewhere were able to return to the UK and pose a threat to our security.
New powers will be introduced to bolster terrorism prevention and investigation measures (Tpims), including “stronger locational constraints”, he said.
Mr Cameron 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.”