Increased household energy bills pushed the rate of inflation to its highest level this year in April – rising to 2.1%.
The Office for National Statistics (ONS) said the increase – from a rate of 1.9% in March – was mostly the result of a higher energy price cap on default tariffs, set by the regulator Ofgem, coming into force.
Electricity and gas prices rose 10.9% and 9.3% respectively between March and April.
The ONS also cited the timing of Easter, as the cost of air and ferry tickets soared, and rising fuel costs.
However, there was a downward effect from hotels as costs rose by less than a year ago.