The Financial Conduct Authority (FCA) is reportedly set to announce it will check 30m insurance policies worth 150bn pounds over concerns customers were exploited.The regulator will next week say it is looking at pensions, endowments, investment bonds and life insurance policies sold in the UK sold between the 1970s and 2000 to determine whether customers were exploited, the UK's Telegraph reported. The review will begin this summer, the paper said.The FCA is understood to be concerned about insurers using so-called "zombie" funds to pay bills from other parts of their businesses.The news sent insurance stocks sliding including Legal & General and Aviva on the FTSE 100.RD