Inflation fell to a four-year low of 2.1% in November as the rise in the price of food eased.
The Consumer Prices Index rate (CPI) has not been lower since November 2009, when it stood at 1.9%.
The figures from the Office for National Statistics (ONS) will ease pressure on the Bank of England as it brings inflation closer to its 2% target.
One reason behind the decline is that large rises in household energy bills have yet to take effect.But the sting in the tail is that these are likely to make a large upward contribution in December's figures.
More top news
The Interview, the Sony film about a fictional plot to assassinate North Korean leader Kim Jong Un, has made more than $15m in online sales.
Jamie Oliver turned down the offer of playing a hobbit in the movie adaptation of the book by JRR Tolkien, the TV chef has revealed.
Children are being put at risk as 11% of posts for permanent children's social workers remain unfilled, experts have warned.