CPIA and the Codes of Practice apply the same PACE does to persons charged with a duty to investigate and prosecute criminal offences. The procedures ensure that investigations are carried out fairly and that they directly impact on article 6 of the Human Rights Act ‘The Right to a Fair Trial’.
The Codes of Practice defines a criminal offence and the relevant roles and responsibilities of persons involved in the investigation process. It also sets out the procedures for the recording, retaining and disclosure of relevant material (not used as evidence in the case) to the Prosecuting Solicitor and the defense. It also sets out the length of time any relevant material is to be retained.