LONDON (Reuters) – British retailers raised prices at the fastest pace since 2008 this month, driven by the rapidly rising cost of food, according to industry data that showed the extent of the inflation squeeze for households. The British Retail Consortium (BRC) said on Wednesday that average prices among its members in early June were 3.1% higher than a year earlier, the biggest jump since September 2008 and speeding from May’s 2.8% rise. The BRC’s measure of inflation covers a narrower range of goods than Britain’s official consumer prices index, which showed inflation hit a 40-year high of…