By David Milliken LONDON (Reuters) – British retailers raised prices at the fastest pace in more than a decade last month, driven by the rapidly rising cost of food and increased energy and transport costs for stores, an industry body said on Wednesday. The British Retail Consortium (BRC), which represents supermarkets and other large retail chains, said average prices among its members last month were 2.8% higher than a year earlier, the biggest annual increase since May 2011. The BRC’s measure of inflation covers a narrower range of goods than Britain’s official consumer prices index, which …