UNDER-FIRE outsourcing giant G4S should be stripped of its public contracts and barred from any further justice projects following its disastrous mismanagement of Birmingham prison, unions and politicians said today.

The beleaguered privateer lost another prison contract after HM Inspectorate of Prisons (HMIP) discovered “appalling” squalor in the jail and that violent prisoners were able to act with “near-impunity.”

G4S had its contract to run Britain’s first private prison, HMP Wolds in east Yorkshire, cancelled in 2012 after a damning HMIP report.