Almost a decade after the Brexit referendum, Britain is still mired in uncertainty. Less than two years since Sir Keir led Labour to a landslide, he is the most unpopular Prime Minister since polling began. Flailing for direction, he is unlikely to survive the Summer in Number 10.  When the new resident arrives, they will be the seventh to live behind the famous front door since the vote to leave the European Union. Cameron, May, Johnson, Truss, Sunak and now Starmer have all failed to chart a credible path forward. It’s likely that at least two more will fail before…