(Reuters) -UK’s blue chip index fell on Wednesday as data showed inflation jumped 9% last month, fuelling fresh worries about the economic toll from surging prices, while Premier Foods topped midcap stocks after it announced plans to raise prices. The FTSE 100 index closed 1.1% lower snapping a three-day winning streak, while the mid-cap FTSE 250 index fell 0.6%. British inflation leapt in April to its highest annual rate since 1982. Soaring energy bills were the biggest driver, reflecting last month’s increase in regulated energy tariffs. “The risk is that should they (the Bank of England) ra…