LONDON (Reuters) – British finance minister Rishi Sunak will warn on Wednesday that easing the cost-of-living crisis for families will not be easy and he will also promise to cut business taxes to boost investment, staff training and innovation. British inflation surged last month to its highest annual rate since 1982, with consumer price inflation hitting 9% in April, pressuring Sunak to do more to help those struggling to pay rising food, fuel and energy bills. “Our role in government is to cut costs for families. I cannot pretend this will be easy,” Sunak will say at a Confederation of Brit…