The underlying rate of Retail Prices Index (RPI) inflation fell to 3.1% in May, from 3.5% in April, the ONS said.
More top news
David Cameron faces a revolt over the EU referendum, as he is accused of "disrespect" for dismissing local party activists' views on Europe.
Dame Helen Mirren was forced to improvise during an awards acceptance speech as mic slips to down to half her height.
The Duchess will carry out her first engagement as Honorary Air Commandant of the Air Cadets after assuming the role in December.