The Decision Whether To Prosecute
3.1 In more serious or complex cases, prosecutors decide whether a person should be charged with a criminal offence, and, if so, what that offence should be. They make their decisions in accordance with this Code and the DPP's Guidance on Charging. The police apply the same principles in deciding whether to start criminal proceedings against a person in those cases for which they are responsible.
3.2 The police and other investigators are responsible for conducting enquiries into any alleged crime and for deciding how to deploy their resources. This includes decisions to start or continue an investigation and on the scope of the investigation. Prosecutors often advise the police and other investigators about possible lines of inquiry, and evidential requirements, and assist with pre-charge procedures. In large scale investigations, the prosecutor may be asked to advise on the overall investigation strategy, including decisions to refine or narrow the scope of the criminal conduct and the number of suspects under investigation. This is to assist the police and other investigators to complete the investigation within a reasonable period of time and to build the most effective prosecution case. However, prosecutors cannot direct the police or other investigators.
3.3 Prosecutors should identify and, where possible, seek to rectify evidential weaknesses, but, subject to the Threshold Test (see section 5), they should swiftly stop cases which do not meet the evidential stage of the Full Code Test (see section 4) and which cannot be strengthened by further investigation, or where the public interest clearly does not require a prosecution (see section 4). Although prosecutors primarily consider the evidence and information supplied by the police and other investigators, the suspect or those acting on his or her behalf may also submit evidence or information to the prosecutor via the police or other investigators, prior to charge, to help inform the prosecutor's decision.
3.4 Prosecutors must only start or continue a prosecution when the case has passed both stages of the Full Code Test (see section 4). The exception is when the Threshold Test (see section 5) may be applied where it is proposed to apply to the court to keep the suspect in custody after charge, and the evidence required to apply the Full Code Test is not yet available.
3.5 Prosecutors should not start or continue a prosecution which would be regarded by the courts as oppressive or unfair and an abuse of the court's process.
3.6 Prosecutors review every case they receive from the police or other investigators. Review is a continuing process and prosecutors must take account of any change in circumstances that occurs as the case develops, including what becomes known of the defence case. Wherever possible, they should talk to the investigator when thinking about changing the charges or stopping the case. Prosecutors and investigators work closely together, but the final responsibility for the decision whether or not a case should go ahead rests with the CPS.
3.7 Parliament has decided that a limited number of offences should only be taken to court with the agreement of the DPP. These are called consent cases. In such cases, the DPP, or prosecutors acting on his or her behalf, apply the Code in deciding whether to give consent to a prosecution. There are also certain offences that should only be taken to court with the consent of the Attorney General. Prosecutors must follow current guidance when referring any such cases to the Attorney General. Additionally, the Attorney General will be kept informed of certain cases as part of his or her superintendence of the CPS and accountability to Parliament for its actions.