Chancellor Jeremy Hunt wants to broaden the appeal of individual savings accounts (Isas) and inspire more people to invest in the stock market. Ahead of the Autumn Statement on November 22, the big question is: how might he do this? These valuable tax-free vehicles have made millions of investors richer since their launch in 1999. But the Financial Times recently reported that Hunt is considering a shake-up of savings and investment accounts to remove barriers to investing, simplify “a complex..