Inflation set to reach 5%
In the year to April, inflation measured by the Consumer Prices Index (CPI) was 4.5%.
New CPI figures are out on Tuesday and many expect the rate to be unchanged.
Howard Archer of independent consultancy IHS Global Insight, stated he "would expect inflation to be unchanged in the year to May and it could well reach over 5% before the end of 2011, partly due to higher energy bills".