Food price inflation is expected to climb above 4 per cent this year, the British Retail Consortium (BRC) has warned, in a sharp reversal of the recent trend of slowing shop prices. According to the lobby group’s forecasts, prices at the supermarket tills will surge by an average of 4.2 per cent in the second half of the year. Helen Dickinson, chief executive of the BRC, attributed the looming price increases to rising employer national...