"19. It is well established that this court is a court of review. In RvA&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.' 20. There is no basis for departing from the principle so clearly expressed by Lord Bingham..."
"11. The function of this court in relation to sentences passed in the Crown Court is, by contrast, to review the sentencing process which took place there. The general rule is that this court will only interfere with a sentence if persuaded that at the time it was passed it was unlawful or wrong in principle or manifestly excessive. None of those things can be said of the sentences passed in this case. 12. It is true that on occasions this court will have regard to matters arising since the sentence was passed, for example an appellant's good progress in prison. Generally speaking it is likely to do so only where it has already concluded that the sentence passed in the Crown Court was either manifestly excessive or unduly lenient and where it is considering what sentence to impose in its place. We consider that in a situation such as has arisen in this case it will normally be appropriate for this court to leave it to the Secretary of State to decide whether to exercise his powers under section 248..."
"(1)The Secretary of State may at any time release a fixed-term prisoner on licence if he is satisfied that exceptional circumstances exist which justify the prisoner's release on compassionate grounds."