Critics say the move, which will keep PC Harper’s killers in jail, leaves number of prison spaces ‘too close to the bone’PC Andrew Harper’s killers will remain behind bars after a critical intervention by Andy Burnham, but the move has led to warnings that overcrowded prisons will be left “one major event away from disaster”.Announcing a U-turn on the early release scheme after weeks of intense pressure, Burnham said he understood “how strongly people feel about this issue”. Cont