Investor jitters follow report by IPPR and lead to more than £6bn being wiped off the sector’s market valueTreasury ‘should tax big banks on quantitative easing windfalls’, says thinktankBusiness live – latest updatesUK bank shares tumbled on Friday, cutting the combined stock market value of some of the biggest companies in the sector by more than £6bn, as fresh calls for a windfall tax on large lenders in the autumn budget spooked investors.Calls for a tax grab, in a paper written by the Institute for Public Policy Research (IPPR) thinktank, took a toll on some of the UK’s biggest high street banks. Continue reading...