Inflation has dropped below 2% - The Bank of England's target – for the first time in over four years.
There was 1.9% growth in the Consumer Prices Index in the year to January 2014, down from 2.0% in December 2013.
The Office for National Statistics released the figures this morning.
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It is the first time since November 2009 that inflation has fallen below the Government's target of 2.0%.
There was 1.8% growth in CPIH in the year to January 2014, down from 1.9% in December 2013. RPIJ grew by 2.1%, up from 2.0% in December 2013.
Prime Minister David Cameron said on Twitter: "Today's fall in inflation is more evidence our long term economic plan is working. We want to ensure a secure future for hard working people."