We find it unnecessary to determine whether the term 'double jeopardy' in both ss 289 and 290 is to be confined to 'anxiety and distress', in the sense spoken of in JW or whether that term has any wider import. Whatever its scope, its removal as a rationale, or sentencing principle, to be taken into account by this Court does not otherwise diminish the scope of the residual discretion.
That residual discretion is perhaps of uncertain width. It is impossible to lay down any exhaustive statement of its scope, or to be unduly prescriptive as to how it should be exercised in any given case. What is clear is that it survives the enactment of the new provisions. In the exercise of that discretion, the Court can dismiss a Crown appeal even where a sentence fixed below is shown to be affected by error in the House sense, and the Court is satisfied as well that a different sentence ought to have been passed...
The new provisions also make it clear that the residual discretion to dismiss a Crown appeal can no longer be exercised on the basis that, if the Court were to proceed to re-sentencing, it would in any event arrive at a sentence close to that imposed at first instance because the court would necessarily be giving a "discount" for double jeopardy.
However, as one learned commentator has pointed out, there remain many reasons, apart from double jeopardy, why, as a matter of discretion, this Court would conclude that, despite error having been established and being satisfied that a different sentence ought to have been passed, a Crown appeal should be dismissed.
Among the factors that might be relevant to the exercise of the court's discretion to dismiss an appeal, despite inadequacy of sentence having been demonstrated, are delay, parity, the totality principle, rehabilitation, and fault on the part of the Crown.
It is not difficult to see how factors such as these, and perhaps a number of others, might be regarded as justifying such a course in any given case. It is important to note that they are all far removed from double jeopardy, certainly in the sense in which that term is now understood in the context of the new provisions.