Harwood was charged over the death after Keir Starmer, QC, director of public prosecutions, reviewed an inquest jury's verdict of unlawful killing.
For instance, a specific case would have to be made to the director of public prosecutions, reviewed every seven days by a high court judge, and looked at in a regular way by parliament itself.
A Crown Prosecution Service review found that in a 17-month period, there were 5,651 prosecutions for rape and 111,891 for domestic violence.
The prosecution will review the case and conduct its own investigation, if deemed necessary, before turning over the evidence to a grand jury.
After seven years Mark Kennedy's tip-off resulted in the conviction of 20 non-violent climate change protesters which is now subject to a Crown Prosecution Service review.
The prosecution's review of the case recommended dismissal of all the charges -- of rioting, robbery and assault -- that stemmed from the night of their so-called wilding, on a legal technicality.
"In light of this information, the Crown Prosecution Service reviewed the case and decided there was no longer sufficient evidence for a realistic prospect of conviction".
It is believed to be the first time that a prosecution-initiated review, as opposed to a defendant's appeals, has resulted in exoneration.
He now faces a nervous wait as the Crown Prosecution Service reviews its decision not to bring criminal proceedings against him.
Frederick Swinnen, an adviser to the prosecutor, said that the prosecution had reviewed more than a million pages from other trials to check for material that it must share with Mr. Mladic's defense.
The inquest, which was supposed to begin late last year, was delayed while the Crown Prosecution Service reviewed a decision, which remains unchanged, not to bring charges of gross negligence manslaughter over the deaths.
