Keir Starmer is set to face difficult questions after the local elections.On the face of it, the forecast did not appear to be too bad for Labour.Lord Hayward, the Tory peer and polling expert, said his party are on course to lose 500 seats in next Thursday’s local elections.Labour, meanwhile, could end up with roughly the same number of councillors they have now, and could even pick up a few extra.But the headline figures do not even come close to telling the full story, and hide a worrying trend that is causing headaches in 10 Downing Street.For a start, the Conservatives are defending around 900 council seats compared to Labour’s 250.In the normal run of things, a bad night for the Conservatives – which May 1 will undoubtedly be – should mean a good one for Labour, with the party picking up a hefty chunk of Tory seats.The main beneficiaries of the Tory collapse this time, however, are set to be