PM is determined to fight on in No 10 but various contenders to replace him have been organising for some time PM is determined to fight on in No 10 but various contenders to replace him have been organising for some time Health secretary Backbench MP and former deputy leader Mayor of Greater Manchester Secretary of state for energy security and net zero Former parliamentary under-secretary of state at the Foreign, Commonwealth and Development Office Keir Starmer has long been dogged by