A judge who extends leniency on the ground here in question should say that this is being done and why. However, I am of the view that, subject always to any relevant statutory requirement, a sentencing judge is entitled, but not obliged, to give a discrete quantifiable discount on the ground of assistance to authorities, provided it is otherwise possible and appropriate to do so. For reasons earlier stated, there may be many cases in which it is either impossible or inappropriate to take that course. Even in cases where, as a matter of legitimate discretionary decision, a judge decides to give a specified discount it is essential to bear in mind that what is involved is not a rigid or mathematical exercise, to be governed by "tariffs" derived from other and different cases but, rather, one of a number of matters to be taken into account in a discretionary exercise that must display due sensitivity towards all the considerations of policy which govern sentencing as an aspect of the administration of justice.
68 A situation where it might not be appropriate or possible to specify the discount is a case where the assistance cannot be identified as a discrete matter, distinguishable and quantifiable, without regard to other mitigating subjective factors. This will generally be so where the assistance follows a plea of guilty and is part of the process of remorse, reform and rehabilitation.
69 The guideline judgment in Thomson and Houlton was not intended to change the established practice in that regard. The guideline specifically recognised at [160(ii)] that, in cases involving assistance to the authorities, a single combined quantification of a discount for both the plea and assistance "will often be appropriate".
70 However, in the present case his Honour found that there was no remorse and that the applicant had not acknowledged, even in evidence, that what he had done was wrong. His Honour concluded that the applicant "might well be rehabilitated". In those circumstances, which will be relatively rare, it was not necessarily inappropriate for the sentencing judge to indicate the discount for assistance as separate and distinct from the purely utilitarian value of the plea. However, as was indicated in R v NP [2003] NSWCCA 195, in a case where it is appropriate to specify individual discounts for the plea and assistance, the discount for the latter is not added to the discount for the former. The discount for assistance is applied to the balance of the sentence after the discount for the plea has been taken into account. In this regard his Honour erred in favour of the applicant.
71 The range of discount normally appropriate for assistance has been held to be 20 per cent to 50 per cent. The cases usually cited for support for such a range include Cartwright (1989) 17 NSWLR 243 and R v Chu (NSWCCA, unreported, 16 October 1998). In Chu the Chief Justice noted that English authorities supporting a range up to two-thirds had not apparently been followed in this State. It should be noted that Cartwright and Chu were both decided before Thomson and Houlton and were cases where the discount for assistance included the benefit to be received for a plea of guilty.
72 In his submissions Mr Byrne suggested that a discrete discount for assistance could amount to 50 per cent or more, in addition to a discount for the plea. I doubt the validity of that submission. However, I am aware, from a matter coming before me at first instance, that a District Court Judge awarded, in a case of an armed robbery in company of a building society, a discount amounting to 70 percent for an early plea and assistance by cumulating the discounts. It seems to me that on its face the discount for assistance in that case must have resulted in a sentence that infringed s 23(3) of the Crimes (Sentencing Procedure) Act, regardless of the extent or importance of the assistance given.
73 I am not persuaded that it was not within his Honour's discretion to determine a discount of 12½ per cent was appropriate for what was, in effect, very limited intelligence provided to the police about the present and past criminality of his co-offenders. The applicant had despoiled the value that his assistance might have had in proof of any offence against his accomplices by his steadfastness in denying his own guilt. It is obvious that he had a much greater involvement in, not only the present offence, but also past criminal activity of the organisation in which he was involved than he was prepared to admit. The effectiveness of the assistance and its value to the authorities is a relevant consideration in assessing the extent of the discount to be given to federal offenders: R v Barrientos [1999] NSWCCA 1 at [47].
74 In Chu the Chief Justice indicated that a guideline judgment might be appropriate in respect of the quantification of a discount for assistance. It seems to me, with respect, that, if sentencing courts are going to regularly depart from what was considered to be the range of appropriate discount for assistance, including a plea of guilty, of not more than 50 per cent, the time is now ripe for a reconsideration by the Directors of Public Prosecutions of the need for a guideline judgment to determine the appropriate range in the light of Thomson and Houlton.
75 Although the applicant was to spend his sentence in protection, there was no admissible evidence placed before the sentencing judge as to the nature of that imprisonment, even though the applicant gave evidence. It cannot be assumed that he is to spend his period in custody in such onerous conditions that there should be a marked diminution of the otherwise appropriate sentence; R v Mostyn [2004] NSWCCA 97, R v Way [2004] NSWCCA 131.
76 The applicant's wife and daughter gave evidence of their fears if the applicant gave evidence against the Sukkars. But he was not going to give any such evidence, as the Crown did not intend to call him. Although his Honour was in error in refusing to take into account the impact upon the family of the assistance given by the applicant, that error was not such that it made a significant difference to his Honour's assessment of the appropriate discount for the applicant's assistance. I acknowledge that it is a discount at the very lowest point in the range but I am not satisfied that Judge Shadbolt's discretion miscarried. As I have noted, the discount was made cumulative to the discount for the plea and to that extent was overly generous.
77 At the hearing of the appeal Mr Byrne tendered an affidavit as to further assistance offered by the applicant to Dutch investigators who are considering prosecution of the principals of the importation. Initially the document was tendered for the purpose of it being taken into account if this Court came to resentence the applicant. Later, Mr Byrne sought to have it received as evidence on the hearing of the appeal itself, being by way of amplification of the evidence of assistance proffered by the applicant prior to his being sentenced. On whatever basis it is received, it does not, in my opinion, avail the applicant. Again the assistance is of limited value because the applicant has not been truthful as to his own involvement. A letter from the Public Prosecutor in the Netherlands, which is part of the material now relied upon, contains the following paragraph: