After a video apparently showing the beheading of another American journalist has been released, a Cobra meeting will be held to discuss the threat to a UK hostage.
The rest of the UK's reaction to Scottish nationalism is one that shows the independence debate is more tied to Holyrood's success than to how bad Westminster is.
The Yes campaign's efforts on the ground are helping it close the gap in the race for independence.
A poll on Scottish independence for the Times has found the Union "on a knife edge" with the Yes campaign only three points away from victory.
Along the Anglo-Scottish border from Dumfries to Berwick, activists and swing voters give their opinions on the Scottish independence question.
The Deputy Prime Minister admits that effectively stripping suspected terrorists of their UK citizenship is difficult in terms of Britain’s legal obligations.
A proposal to build a new airport in the Thames Estuary is to be rejected in an apparent blow to the Mayor of London. But could it help him?
The most crucial of all decisions – to go to war – must not be left in the constitutional and procedural shadowy shambles it currently is.
Former Tory attorney general says proposal to prevent British terror suspects from returning home would "offend basic principles of our own common law".
How footballers behave on Transfer Deadline Day suggests that raising the top tax rate isn't that dangerous.
Strangulation of funds has seen the NHS Mental Health Trusts lose £253m, 2.3 per cent of their funding.
This year, the number of foreign students undertaking higher education in Britain fell for the first time since 1983. The government must stop treating them with contempt.
If Carswell wins his by-election, and the potential momentum that could give Ukip, an EU referendum will look more likely – and the renegotiation would suddenly look very different.
As the shadow business secretary’s comments blaming Gordon Brown for damaging Labour’s credibility make headlines this week, it’s worth looking closer at the party’s attitude towards their most recent PM
The decision of nine Conservative MPs elected in 2010 to stand down suggests many fear defeat - and makes it more likely.
The Prime Minister will make a statement in the Commons later today as parliament returns after recess and the coalition continues this morning negotiating how to widen anti-terror laws.
Ukip could cost Labour several seats next year.
Douglas Carswell set for landslide victory after his defection to Ukip from the Tories.
The PM declares that the "root cause" of terrorism is the "poisonous ideology of Islamist extremism".
The Conservative MP and classically trained singer defends Oxford from claims of elitism, discusses how the law should change for child exploitation cases, and reveals why she came into politics.
Kev Sherry, of Glaswegian indie outfit Attic Lights, explains why he's changed from No to Yes on the Scottish independence question.
Had the PM refused to promise a referendum, he would likely have been deposed as Conservative leader.
Ukip's Clacton candidate, who is refusing to give way to Douglas Carswell, is now considering defecting himself - to the Conservative party.
Without a strong left presence, there is no one to counter the rightward march of British politics.
Instead of asking why there isn't a feasible left-of-centre party, we should be asking why, when support for their policies is so high, only 1 per cent of voters crossed the Greens' box in May 2010.
Following the surprise news this week that Douglas Carswell MP has defected from the Conservatives to Ukip, Nigel Farage is anticipating more Tories joining his fold.
The time available to achieve European reform looks to be running out.
The race narrows again after Alex Salmond's victory over Alistair Darling.
Leading Tory eurosceptic says Carswell's decision doesn't make sense after Cameron's EU referendum pledge.
Watch the PM clash back in 2012 with the backbench MP who has today defected from his party to Ukip.