"If, subsequent to the commission of the offence, provision is made by law for the imposition of a lighter penalty, the offender shall benefit thereby."
"As pointed out in the dissenting judgment of the minority in Scoppola (No 2) at 0-111, this represents a norm of a different order from the principle of no punishment without law. Whilst the lex gravior principle is a fundamental and essential condition of freedom, lex mitior "expresses a choice that reflects the development of a social process in the context of criminal law. It circumscribes the scope of criminal law by preserving benefits accruing to defendants as a result of substantive laws subsequent to the commission of the offence and applicable while the case was pending."
"English criminal courts sentence according to the law and practice prevailing at the time of sentence, whenever the offence was committed, subject only to scrupulous observance of the lex gravior principle of Article 7, namely that no sentence must be imposed which exceeds that to which the defendant was exposed at the time of committing the offence."
"appeals against sentence to the Court of Appeal are not conducted as exercises in re-hearing ab initio, as is the rule in some other countries; on appeal a sentence is examined to see whether it either erred in law or principle or was manifestly excessive, and those questions are determined by reference to the law and practice obtaining at the time that the sentence was passed by the trial judge; see R v Graham [1999/ Cr. App R (S) 312 and R v Boakye[2012] EWCA Crim 838 ; accordingly the situation which arose in Scoppola out of a change in the law between sentence and appeal could not raise a similar difficulty here"
"there is no injustice to the defendant if he is sentenced according either to the law as it existed at the time of his offence or, if more lenient, according to the law as it exists when he is convicted and sentenced. To insist that a defendant should not be sentenced on a basis now authoritatively regarded as excessive is one thing. It is quite another to say that he should be sentenced according to a practice which did not obtain when he committed the offence and does not obtain now, merely because for some time in the interim, however short, a different practice was adopted which has now been abandoned as wrong."
"A defendant sentenced lawfully, in accordance with the prevailing tariff, and when all factors relevant to sentence were known to thc sentencing judge, can, in our view, hardly be described as the victim of [a miscarriage of justicel. Secondly, an alteration in the statutory maxima or minima penalty between sentence and reference cannot, in our view, give rise to legitimate grievance. ..." 54. Whilst a court will faithfully give effect to a change in a sentencing regime from the time that it is introduced, it is not permissible for it to anticipate its commencement. That way ties chaos. Sometimes, indeed, changes which are legislated for in statute are never brought into force. That was the case with a raft of new provisions for intermittent custody enacted by theCriminal Justice Act 2003 . The present appeal amounts to a claim by Docherty to anticipate the commencement of the change of regime, to the extent that he wishes the disappearance of IPP to be effective for him before the Commencement Order (by article 6(a)) abolishes it. He can no more do that than it would be possible for him to contend that IPP should be treated as unavailable for every court from the day that LASPO received the Royal Assent on I May 2012. Anticipation of a change which is yet to take effect is no part of lex mitior. I-ex mitior, as explained in Scoppola at para 108, prevents the imposition of a sentence which the system has now adjudged, by a change of law, to be excessive. But if the change has yet to be made, that judgrnent has not yet been given effect; it is in prospect only. The fixing of the date for the change is part of the change itself. If a conscious decision has been made not yet to commence the new law/practice, it cannot yet be said that "society now considers excessive" the old. And it may well consider, rationally, that a penalty shall be regarded as excessive for the future but not for the past. Conclusion: lex mitior 55. There are real difficulties in interpreting the decision in Scoppola, both with the insertion of a new sentence into article 7 when such was deliberately left out at the time of drafting, and with its extent if it is to be considered inserted. As to the first, the decision is the considered view of the Grand Chamber. It is not necessary to revisit the controversy because English practice recognises lex mitior in its ordinary form, namely the principle that an offender should be sentenced according to the law and practice prevailing at the time of his sentence, subject to not exceeding the limits (ie in England normally the maximum) provided for at the time the offence was committed. If it were necessary to investigate the second difficulty, and the possibility that a defendant is entitled to insist on being sentenced according to any more favourable law or practice which has at any time obtained between the commission of the offence and the passing of sentence, that extended rule is not clearly adopted by the Grand Chamber, appears not to be within the stated rationale for the principle of lex mitior, and would entail unwarranted consequences. Such an extended concept of the principle should, with great respect, not be applied. 56. Given these conclusions, the various other examples, to which we were referred, of express inclusions in national and international instruments of an additional sentence stating the lex mitior rule, do not take the matter any further forward. UnlikeECHR article 7 they are not part of domestic English law. They do not in any event shed any light on the second question examined above, as to the extent of the lex mitior principle, assuming it is to be read into article 7."
"[19] It is well established that this court is a court of review. In R v A&B[1999] 1 Cr App R (S) 52 , Lord Bingham CJ made this clear at page 56: "the Court of Appeal Criminal Division is a court of review; its function is to review sentences imposed by courts at first instance, not to conduct a sentencing exercise of its own from the beginning." [2()] There is no basis for departing from the principle so clearly expressed by Lord Bingham. This court considers the material before the sentencing court and any further material admitted before the court under well established principles. It considers whether on the basis of that information the sentence was wrong in principle or manifestly excessive. It does not, years after the sentence, in the light of what has happened over that period, consider whether an offender should be sentenced in an entirely new way because of what has happened in the penal system or because, as in ZTR[2015] EWCA Crim 1427 , the offender has supplied information long after conviction. This court was not established to perform the function suggested; it is not constituted to carry out the suggested function; and it could not do so as presently constituted. [21] There is under our constitution the available means to rectify any injustice in the way in which the operation of these sentences has in fact eventuated. The review of sentences in the light of events occurring long after the original sentence is a matter for the Parole Board or, if a change is required for the regime for release, as we discuss at paragraphs 43 and following below, for the Executive and Parliament under the powers granted under s. 128 of LASPO 2012. Such a change would not amount to any impermissible interference with the sentence passed by the courts. It would be to correct a position that may have been unforeseen when the IPP sentencing regime was enacted."