The headline rate of inflation for goods leaving the factory gate (output prices) rose 2.8% on the year to January 2018, down from 3.3% in December 2017.
Prices for materials and fuels (input prices) rose 4.7% on the year to January 2018, down from 5.4% in December 2017.
All industries provided upward contributions to output annual inflation; the largest contribution was made by food products.
Prices of imported materials and fuels increased 3.5% on the year to January 2018, slowing from 5.2% in December 2017 and the lowest the rate has been since June 2016.