11. Having made these remarks, his Honour proceeded to sentence the respondent to a term of 6 years' imprisonment for the offence of recklessly inflicting grievous bodily harm upon Mr Bower; a term of 6 months' imprisonment for the offence of illegally taking and using the Forrester; a term of 12 months' imprisonment for the offence of burglary committed by breaking into the garage and stealing alcohol and tools; and a further term of 12 months' imprisonment for the offence of arson. His Honour indicated that in imposing the first of these sentences he had taken into account the offences set out in Schedule 1 pursuant to s 357 of the Crimes Act. His Honour ordered that all sentences be served concurrently. A non-parole period of 3 years was imposed. The sentences and the non-parole period were back dated to 17 July 2003, when the respondent was first taken into custody.
12. The Director of Public Prosecutions, Mr Refshauge SC, submitted that the individual sentences had been too lenient and that the order that they be served concurrently had resulted in an overall response to the respondent's criminality that had been manifestly inadequate.
13. Whilst conceding that the offence of recklessly inflicting grievous bodily harm to Mr Bower may not have fallen within the worst class of cases to which the relevant section applied, Mr Refshauge argued that its objective gravity would have warranted a sentence approaching the maximum. He conceded that there were three subjective factors which his Honour had been obliged to take into account: namely, the youth of the respondent; his "chaotic" childhood and its apparent impact upon his subsequent psychological condition; and the fact that he had pleaded guilty to the offences in question. Mr Refshauge argued, however, that the cumulative weight of these factors did not justify the leniency reflected in the sentence actually imposed for this grave offence.
14. These submissions must be considered in the context of the maximum penalty of 10 years' imprisonment set by s 20 of the Crimes Act for offences of this kind. Whilst we are conscious of the fact that the determination of maximum penalties is a matter for the legislature rather than the judiciary, it is difficult to do justice to the submissions made in the present appeal without observing that a sentence of 10 years' imprisonment seems quite inadequate for cases in which offenders have committed acts of violence with reckless indifference as to whether others might suffer grave injuries as a result.
15. Nonetheless, his Honour was obliged to approach the matter on the basis that the maximum penalty of 10 years' imprisonment was appropriate for only the worst class of offences of this nature, though, as his Honour quite properly observed, this case almost fell into that category. Due allowance had to be made for the three subjective factors within this context.
16. The respondent was only 19 years old at the time of the offence and the senior probation and parole officer who prepared the updated pre-sentence report said that he had seemed immature.
17. He had been the eldest of four siblings and three half siblings and as a child had been exposed to substance abuse and promiscuity in the home. He had apparently had only a distant relationship with his father who was an alcoholic and a volatile relationship with his mother due to her drug use. He had been asked to leave home for the first time at the age of 11 and, whilst he returned about 8 months later, he had been able to stay for only for a brief period before again being asked to leave. There had been significant hostility between himself, his mother and her partner.
18. He first pleaded guilty to all four charges on 1 August 2003 and was committed to the Supreme Court for sentence. In November 2003 he indicated that he would not adhere to his plea in relation to the charge of recklessly inflicting grievous bodily harm but on 19 February 2004 indicated that he had changed his mind and would adhere to his plea of guilty in respect of that charge. A plea of guilty, particularly one entered at a relatively early stage of the proceedings, may be relevant to the sentencing process for a number of reasons. It may be evidence of contrition on the part of the offender, it may spare victims and/or their relatives the trauma of having to give evidence about the relevant incident and it may save the community the time and expense of a trial. In the present case, whilst expressing scepticism about the extent of the respondent's remorse, his Honour was clearly obliged to take the other benefits of the plea of guilty into account.
19. The low maximum penalty and the other factors to which we have referred clearly imposed substantial constraints upon the magnitude of the sentence that could properly have been imposed upon the respondent for this offence. Nonetheless, we are inclined to accept Mr Refshauge's submissions that a more substantial sentence would have been warranted, especially given the further offences that were listed on the schedule and taken into account pursuant to s 357 of the Crimes Act.
20. However, the determination of an appropriate sentence involves the exercise of judicial discretion and an appellate court is bound by the principles explained by the High Court of Australia in House v The King [1936] HCA 40; (1936) 55 CLR 499 in the following passage from the judgment of Dixon, Evatt and Mc Tiernan JJ at 504-505: