British Prime Minister David Cameron is set to announce new anti-terror legislation later (after 15.30 BST) in response to the threat posed by Islamic State militants fighting in Syria and Iraq.
However, it's understood that the Prime Minister's Conservative Party and coalition partners the Liberal Democrats are still not in final agreement about new plans to tackle extremism.
It's thought over 500 Britons have traveled to Syria and Iraq to fight, and there are growing fears some could attempt to attack the UK on their return.
But there are civil rights concerns about some of the Prime Minister's plans - notably over his desire to seize passports from UK citizens who've traveled to foreign conflicts.
Reporter Tom Swarbrick says some of the measures do already have agreement from both parties.
IN: "Things like...
OUT: ...law."
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