The rate of inflation in the UK fell negative again in September, according to the Office for National Statistics (ONS).
Inflation, as measured by the Consumers Prices Index (CPI), fell to -0.1%.
The ONS said clothing and motor fuel prices did not rise as fast as usual, and therefore were not enough to offset falls in other areas.
Food prices in the year to September dropped 2.5%, marking the 15th consecutive month of falling prices. Over the year, petrol prices are down by an average 3.7p per litre.
Inflation has been floating around zero for the majority of the year. But it has not been in negative territory since April.
The Bank of England's official target is 2%. But the Bank does not expect inflation to reach even 1% until Spring 2016.