“If a defendant denied guilt but was convicted and sentenced following a contested trial without supplying valuable information before sentence or expressing willingness to do so, the Court of Appeal, Criminal Division would not ordinarily reduce a sentence to take account of information supplied to the authorities after sentence (see Waddingham (1983) 5 Cr.App.R.(S.) 66; Debbag and Izzett (1991) 12 Cr.App.R.(S.) 733; and X (1994) 15 Cr.App.R.(S.) 750. The reason for this rule was clear. The Court of Appeal, Criminal Division was a court of review; its function was to review sentences imposed by courts of first instance, not to conduct a sentencing exercise of its own from the beginning. It ordinarily relied entirely, or almost entirely, on material before the sentencing court. A defendant who denied all guilt and withheld all co-operation before conviction could not hope to negotiate a reduced sentence in the Court of Appeal by co-operating after conviction. In such a situation the defendant must address representations to the Parole Board or to the Home Office.”
“It is plain from that section that, despite the general rule, the court is not precluded in exceptional cases from taking into account material which has arisen subsequently. We would wish, however, to reiterate that the remarks made by Lord Bingham in relation to defendants who deny guilt and subsequently decide to improve their position by giving information remain valid. But that is not this case. Quite the opposite. This is a case where the appellant has maintained the same account as to the substance of his involvement in the drug trading in question right from the beginning and carried it through into the evidence that he gave at the trial of Michael Watson.”
“Where, however, the offender wishes to limit his co-operation to the text regime, it is normally unrealistic for him to anticipate any reduction in sentence on appeal to the court if he has pleaded not guilty and has not set this process in motion by the time the Crown Court has sentenced him.”