Pressure is mounting on Sir Keir Starmer to resign following Labour’s disastrous local election results as more than 80 of his own MPs speak out against him. The prime minister has vowed to stay on in his post despite the calls, saying in a speech on Monday that he is “taking responsibility” for the results, but added: “I also take responsibility for delivering the change that we promised for a stronger and fairer Britain that we must build.” But the Labour leader could still face a leadership contest if at least 81 of the party’s MPs – 20 per cent of its parliamentary members – get behind a single challenger to go against him. Bookmakers have given Sir Keir unfavourable odds against the mounting pressure, with the most popular offers putting his odds of resigning this year at 1/6. This rises to 6/1 for him to resign next year, 40/1 for him to resign in 2028 and 20/1 for him to go 2029 or later.…