The Return of White Terrorism

While Britain, much like the rest of the world, has been distracted by terror threats from the Middle East, what remains of the Irish Republican Army has regrouped and is apparently looking to blow something up in London. From Al Jazeera:

There is no specific target identified, but there is a desire among the dissident groups to mount an attack on the mainland.
The Real IRA recently warned of potential attacks on financial and banking centres, saying they had helped support Britain's "colonial and capitalist" system.
Since the beginning of the year, the dissident groups are thought to be behind around 60 incidents in Northern Ireland.
Hadn't heard about them? Well that's part of the drive to launch operations on mainland Britain.
The Provisional IRA used to claim one bomb in London was worth ten in Belfast in terms of publicity, economic damage and "prestige" for the cause.

 The Gaurdian UK gives us some idea of what the Brits might be facing:

There is growing concern over the sophistication of attacks being carried out in Northern Ireland. Second, bomb makers with expertise gained from the long Provisional IRA campaign of violence are believed to be now helping dissident republican terrorists. And the capability of the dissidents to stage attacks is thought to be nearly as dangerous as was that of the Provisional IRA.