Energy prices used to get the blame for pushing up inflation but not this month.
Small rises from some energy companies were cancelled out by the removal of green taxes.
Looking at the detail of the components of inflation usually gives some insight in which way the wind is blowing but this month things look to have ground to a halt.
Prices have fallen for peculiar things like "cultural events" - winter prices are lower at some attractions and DVDs.
Upward pressure came from baby wipes and toothbrushes. I¹m not making this up.
Reading the runes in that mix would be very hard except perhaps the very lack of direction tells us that inflation will stay where it is for some time.
The Prime Minister has welcomed the fall in inflation:
Chief Secretary to the Treasury Danny Alexander has said that today's inflation figures are evidence the long term economic plan "is working."
– Danny Alexander
Inflation falling below 2% for the first time since November 2009 is further evidence that our long term economic plan is working. Controlling inflation and rebuilding our economy are the only sustainable ways to secure living standards for the future.
- Read more: Consumer Price Index inflation falls to 1.9%
The headline rate of Retail Price Index inflation rose to 2.8% from 2.7% the month before, the Office for National Statistics said.
The rate of Consumer Price Index inflation fell to 1.9% in January from 2% in December, official figures showed today.