If you were to ask the ‘person in the street’ what he or she wants from the criminal justice system, the reply is more than likely going to be that it should convict the guilty and acquit the innocent; and, if it should happen that an innocent person is convicted in ‘error’, then most people would probably think that the appeals system should operate to overturn the conviction in a speedy fashion to reduce the harm that was caused to the victim and his or her family and friends and restore the legitimacy of the criminal justice system. The idea that the criminal justice system should be about convicting the guilty and acquitting the innocent is reflected in political statements about how the system should function and it is transmitted in portrayals of wrongful convictions and wrongful acquittals in the media. (Naughton, 2009, p 17)

2.2 It is not the function of the CPS [Crown Prosecution Service] to decide whether a person is guilty of a criminal offence, but to make assessments about whether it is appropriate to present charges for the criminal court to consider. The CPS assessment of any case is not in any sense a finding of, or implication of, any guilt or criminal conduct. A finding of guilt can only be made by a court. (CPS, 2018)