Britain's annual inflation rate fell to 2.8% in April from 3.3% in March, according to data from the Office for National Statistics published Wednesday.
Analysts expected a 3% rate for the month.
On a monthly basis, consumer prices were 0.7% higher, unchanged from the previous month and compared with the market forecast of 0.9% growth.
Meanwhile, the UK's annual core inflation rate was 2.5%, compared with the prior 3.1% and expected 2.6%. Month over month, core consumer prices gained 0.7%, against the previous reading of a 0.4% uptick and the consensus estimate of a 0.8% increase.