Statutory provisions
20 Section 19A(1) of the Crimes Act 1900 (Crimes Act) prescribes that the penalty for murder is imprisonment for life. Imprisonment for life is defined in s 19A(2) as being for the term of the person's natural life. However notwithstanding these provisions, s 21(1) of the Crimes (Sentencing Procedure) Act 1999 (Sentencing Procedure Act) enables the court to pass a lesser sentence. Section 21A of the Sentencing Procedure Act as it stood at the relevant time required the court to impose a sentence of a severity that is appropriate in all the circumstances of the case and, for that purpose, to take into account such of the matters specified in s 22A(2) as are relevant and known to the court. Those relevant to the present case include those specified in s 21A(2)(a), (c), (d), (e), (f), (g), (h), (i) and (j).
21 Section 61 of the Sentencing Procedure Act requires a court to impose a sentence of imprisonment for life on a person who is convicted of murder if the court is satisfied that the level of culpability in the commission of the offence is so extreme that the community interest in retribution, punishment, community protection and deterrence can only be met through the imposition of that sentence.
22 Section 22 of the Sentencing Procedure Act mandates that the court take into account both the fact that the offender has pleaded guilty and when it was that the offender pleaded guilty or indicated an intention to plead guilty. Having done so it may impose a lesser penalty than it otherwise would have imposed. Section 23(1) of the Sentencing Procedure Act is to a like effect in respect of assistance given or undertaken to be given to law enforcement authorities in the prevention, detection or investigation of the offence concerned or any other offence. In determining whether to impose a lesser penalty and the nature and extent of the penalty it imposes the court must consider the matters specified in s 23(a) - (j) inclusive. The matters nominated by Senior Counsel for the applicant as relevant to the present case were s 23(2)(b), (c), (d), (g) and (h). However, s 23(3) prohibits the court from imposing a lesser penalty under the section that is unreasonably disproportionate to the nature and circumstances of the offence.
23 Both s 21A (2) (as it stood at the relevant time) and s 22(1) require the court to "take into account" certain factors. Neither of the sections directs that the court must take a particular course of action as a consequence of having taken the relevant matters into account. Although the verbal formula used in s 23(2) uses different words ("must consider") it is to the same effect as s 21A(2) and s 22(1). It is sufficient for the court to consider the relevant matters, but what consequence flows form such consideration is a matter for the court in the exercise of its sentencing discretion.
24 Finally s 6(3) of the Criminal Appeal Act 1912 must be taken into account. It provides that if, on an appeal against sentence, the court is of opinion that some sentence other than that appealed against should have been passed, it must quash the sentence imposed and pass such other sentence. It is important to bear this provision in mind because as was pointed out by Spigelman CJ in Regina v Simpson (2001) 53 NSWLR 704:
"Sentencing appeals in this court frequently proceed as if the statutory trigger for the quashing of a sentence were expressed as follows: 'If it is of opinion that error has occurred in the sentencing process.' That is not the statutory formulation. By s 6(3) this court must form a positive opinion that 'some other sentence… is warranted in law and should have been passed'. Unless such an opinion is formed, the essential pre-condition for the exercise of the power to 'quash the sentence and pass such other sentence in substitution therefor' is not satisfied. As the judgments in Dinsdale ((2000) 202 CLR 321)… indicate, the exercise of the power in s 6(3) further requires the identification of error in the requisite sense". (at 720-721, para 79)
25 The "requisite sense" referred to by Spigelman CJ is succinctly and authoritatively expressed in the joint judgment of Dixon, Evatt and McTiernan JJ in House v The King (1936) 55 CLR 499 at 504 - 505. (See also Dinsdale v The Queen (2000) 202 CLR 321 at 325 - 326 para 6; 329 para 21; 339 - 340 para 58)
26 In determining this appeal, based as it is on the ground that the sentence imposed is manifestly too severe, the court should bear in mind what was said by Glesson CJ and Hayne J in Dinsdale v The Queen (supra) namely:
"Manifest inadequacy of sentence, like manifest excess, is a conclusion. A sentence is, or is not, unreasonable or plainly unjust; inadequacy or excess is, or is not, plainly apparent. It is a conclusion which does not depend upon attribution of identified specific error in the reasoning of the sentencing judge and which frequently does not admit of amplification except by stating the respect in which the sentence is inadequate or excessive. It may be inadequate or excessive because… the sentence imposed is manifestly too long or too short. But to identify the type of error amounts to no more than a statement of the conclusion that has been reached. It is not a statement of reasons for arriving at the conclusion. A Court of Criminal Appeal is not obliged to employ any particular verbal formula so long as the substance of its conclusion and reasons is made plain. The degree of elaboration that is appropriate or possible will vary from case to case." (at 325 - 326 para 6)