PRIVATE security firm G4S could get immunity from prosecution for any crimes that its representatives admit to when giving evidence to an inquiry into alleged abuse at a detention centre for migrants. 

The attorney-general today requested “wide-ranging” legal requests known as “undertakings” so evidence given by witnesses during the course of the inquiry would not be used against them in criminal proceedings.

The company used to run Brook House immigration removal centre near Gatwick Airport, where mistreatment of detainees was uncovered by a BBC Panorama investigation in 2017.