By Huw Jones LONDON (Reuters) – Britain’s Financial Conduct Authority (FCA) told banks and insurers on Thursday to do more to help customers struggling with a cost of living crisis as it investigates 40 banks for dragging their feet. Interest rates are increasing to quell decades high inflation, with energy, mortgage and food bills also rising faster than wages. Sheldon Mills, the watchdog’s head of competition and consumers, said that in May over nine million people had too much debt, up by two million since 2020. “We’ve told lenders that we expect them to support struggling customers, partic…