“2.2 It is not the function of the CPS 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.. 2.5 It is the duty of prosecutors to make sure that the right person is prosecuted for the right offence and to bring offenders to justice wherever possible.. 2.10 Prosecutors must apply the principles of the [ECHR] ..at every stage of a case. They must comply with any guidelines issued by the Attorney General and with the policies and guidance of the CPS issued on behalf of the DPP…CPS guidance contains further evidential and public interest factors for specific offences and offenders..”