“19. We make it clear that the occasions for the exercise of this jurisdiction to stay ought to be very limited once the provisions of the convention are generally known, as by now they should be becoming known. Moreover, the jurisdiction to stay does not mean that the court is entitled to substitute its own view for that of the prosecutor upon the assessment of the public policy question whether a prosecution is justified or not. The power to stay is a power to ensure that the convention obligation under Article 26 is met. The convention obligation is to provide for the possibility of not imposing penalties on victims for their involvement in unlawful activities to the extent that they have been compelled to do so. Thus the convention obligation is that a prosecuting authority must apply its mind conscientiously to the question of public policy and reach an informed decision. If it follows the advice in the earlier version of the guidance, set out above, then it will do so. If however this exercise of judgment has not properly been carried out and would or might well have resulted in a decision not to prosecute, then there will be a breach of the convention and hence grounds for a stay. Likewise, if a decision has been reached at which no reasonable prosecutor could arrive, there will be grounds for a stay. Thus in effect the role of the court is one of review. …”
“Stage 4: Is it in the public interest to prosecute? The Public Interest and Compulsion “Compulsion” includes all the means of trafficking defined by the United Nations Protocol on Trafficking (the United Nations Convention against Transnational Organised Crime 2000 supplemented by the Protocol to Prevent, Suppress and Punish Trafficking in Persons): threats, use of force, fraud and deception, inducement, abuse of power or of a position of vulnerability, or use of debt bondage. It does not require physical force or constraint. …. The means of trafficking/slavery (i.e. the level of compulsion) may not be sufficient to give rise to defences of duress or under section 45 but will be relevant when considering the public interest test. In considering whether a trafficking/slavery victim has been compelled to commit a crime, prosecutors should consider whether a suspect’s criminality or culpability has been effectively extinguished or diminished to a point where it is not in the public interest to prosecute. A suspect’s criminality or culpability should be considered in light of the seriousness of the offence. The more serious the offence, the greater the dominant force needed to reduce the criminality or culpability to the point where it is not in the public interest to prosecute; see VSJ and GS.”
“i) The jurisdiction to stay proceedings as an abuse of the process of the court is an important, but limited, power of a criminal court. It should not be widened in scope to meet particular needs unless there is a very clear reason for doing so. ii) The Convention and the Directive are not directly applicable in domestic law. It is for Parliament and the executive to decide how to give effect to the international obligations of the United Kingdom, and where it does so by legislation the function of the court is to apply that legislation. The Directive required Member States of the European Union to put in place arrangements that reflect its requirements. We have not identified any clear gap between the provisions of the 2015 Act and those obligations, and in our judgment the CPS Guidance means that the CPS is "entitled" not to prosecute for the purposes of Article 8 of the Directive. That being so, our primary focus is on the domestic law as found in the common law of duress and the statutory defence in section 45 of the 2015 Act. iii) The state's positive obligation underarticle 4 ECHR has been considered in Rantsev v. Cyprus and Russia(2010) 51EHRR 1 : at [185]: "member States are required to put in place a legislative and administrative framework to prohibit and punish trafficking. The Court observes that the Palermo Protocol and the Anti-Trafficking Convention refer to the need for a comprehensive approach to combat trafficking which includes measures to prevent trafficking and to protect victims, in addition to measures to punish traffickers." There is a recognition of the operational choices in terms of priorities and resources that must be made in this context at [286]. The state's positive obligation to protect victims of trafficking is not expressed in terms of non-prosecution, see [287]: it "requires States to endeavour to provide for the physical safety of victims of trafficking while in their territories and to establish comprehensive policies and programmes to prevent and combat trafficking…". We do not think that there is any basis for deriving a positive obligation not to prosecute victims of "forced or compulsory labour" inArticle 4 of the ECHR . This, the court found, is the lowest level of gravity of oppression against which protection is required, below "slavery" and "servitude". That is the level of oppression for which DS contends in this case. If any such obligation did exist, it would be heavily qualified and there is no basis for concluding that the qualifications found in the common law of duress, and in section 45 of the 2015 Act, and the CPS Guidance are inadequate so that there is a violation of any such positive obligation underArticle 4 ECHR which might exist.”