You will be pleased to know that The Times Weather Eye agrees with you about an SSW:
Or maybe they've just been reading this thread - you beat them to it with the news of it! 
"There could be a shock on the way sometime in the new year. This winter has been largely mild, although wet and windy in what has been typical Atlantic winter weather. However, trouble is brewing in the stratosphere over the Arctic. This is where the polar vortex — a whirling mass of frigid air in the stratosphere — is becoming weaker. Everything is in place for a sudden stratospheric warming, a dramatic convulsion when the temperature of the stratosphere soars by about 50C in one of the world’s most dramatic meteorological phenomena.
That is likely to set in progress a return of the Beast from the East in the next few weeks, with biting easterly winds from Siberia or Scandinavia, similar to the big freeze of late February and early March this year, which was set off by another stratospheric warming event.
“We are very confident of a sudden stratospheric warming, and the signal is getting stronger day by day,” explained Adam Scaife, the head of long-range predictions at the Met Office’s Hadley Centre. “The impact on our weather normally comes one to three weeks later as easterly winds bring cold and snow.”
Exactly when the easterlies will hit the UK remains uncertain — possibly as soon as late December, although more likely in mid to late January. How long the freeze will last is also unknown, but it could run through to February, with hard frosts, ice and snow.
There is an outside chance that the sudden stratospheric warming may pass off without upsetting the UK’s normal weather patterns. However, another factor is raising the likelihood of a freeze. All through the Equator a belt of thunderstorms circles the globe in a regular cycle, and by February that band of storms will be in the western Pacific — where it can influence the cold easterlies that invade the UK.
In summary, it looks increasingly like winter is going to turn very cold."