The current energy secretary and former Labour leader knows how to talk the talk with business leaders – and is a much smarter politician than he’s given credit for, writes Chris Blackhurst A fter Eric Morecambe died, Ernie Wise soldiered on, trying to keep alive the spark that made them comedy’s greatest double act. It didn’t work and eventually he gave up, confining himself to giving interviews and public reminiscing. As Sir Keir Starmer heads off to the backbenches , as the plain MP for