Nature of Offence in UK Law

But in a very large number of cases there is no clear indication either way. In such cases there has for centuries been a presumption that Parliament did not intend to make criminals of persons who were in no way blameworthy in what they did. That means that whenever a section is silent as to mens rea there is a presumption that, in order to give effect to the will of Parliament, we must read in words appropriate to require mens rea.

"Unjust" I regard as directed primarily to the risk of prejudice to the accused in the conduct of the trial itself, "oppressive" as directed to hardship to the accused resulting from changes in his circumstances that have occurred during the period to be taken into consideration; but there is room for overlapping, and between them they would cover all cases where to return him would not be fair.

In the light of this narrative I would have been willing to hold, had it been necessary to do so, that throughout the period of the conduct which is said to constitute the offence in this case the requirement of double criminality was satisfied. But it is the conduct for which extradition is sought, not any narrative that may be included in the Part 1 warrant simply by way of background, that must satisfy the test of double criminality.

That is so, as the court explained in MM, because of the cumulative effect of the failure to draw any distinction on the basis of the nature of the offence, the disposal in the case, the time which has elapsed since the offence took place or the relevance of the data to the employment sought, and the absence of any mechanism for independent review of a decision to disclose data under section 113A.