The legislative scheme
13In s 3 of the Act the objects are stated in the following terms:
(1) The primary object of this Act is to provide for the extended supervision and continuing detention of serious sex offenders so as to ensure the safety and protection of the community.
(2) Another object of this Act is to encourage serious sex offenders to undertake rehabilitation.
14Section 9(2) of the Act provides that an extended supervision order may be made "only if the Supreme Court is satisfied to a high degree of probability that the offender poses an unacceptable risk of committing a serious sex offence if he or she is not kept under supervision". In reaching a determination on the issues raised by s 9(2) the Court is required to have regard to the matters set out in s 9(3).
15The phrase "satisfied to a high degree of probability" is a statutory standard of proof higher than the civil standard but lower than the criminal standard (see Attorney General for the State of New South Wales v Tillman [2007] NSWSC 605 at [27] per Bell J; Attorney General for the State of New South Wales v Tillman [2007] NSWCA 119 at [5] and [18]).
16The phrase "unacceptable risk of committing a serious sex offence" was introduced by the Crimes (Serious Sex Offenders) Amendment Act 2010 . It replaces the test previously provided for in s 9(2) of a high degree of probability of the offender being "likely to commit a further serious sex offence". The phrase "unacceptable risk" is not defined by the Act. Section 9(2A) does provide that in determining that question the Court is not required to determine that the risk of committing a serious sex offence is more likely than not.
17This Court has considered the meaning of "unacceptable risk" in a number of decisions since the amendment came into effect in December 2010 including the preliminary hearings in this case and in State of New South Wales v Thomas , State of New South Wales v Conway , State of New South Wales v Reed and State of New South Wales v Scerri , and the final hearings in the matters of State of New South Wales v Thomas and State of New South Wales v Richardson .
18In State of New South Wales v Thomas (Preliminary) [2011] NSWSC 118 at [22] RA Hulme J adopted the agreed position of the parties that the new formulation in s 9(2) does not impose a more stringent test. There has been no dissent from that approach in the decisions that have applied the new test nor, so far as I can discern, to the approach the Court should take to determining whether there is a risk of a particular defendant committing a serious sex offence. To the extent that there is any divergence of view, it is to the approach to determining whether a given risk is unacceptable.
19In Thomas (Preliminary) at [20] RA Hulme J expressed the tentative view that the test in s 9(2) is satisfied if there is a risk that the person will commit a serious sex offence which is present to a sufficient degree so that the safety and protection of the community cannot be ensured unless an order is made.
20In State of New South Wales v Darrego [2011] NSWSC 360 McCallum J expressed concern that this formulation imported considerations beyond the words of the section. Without expressing a concluded view her Honour said (at [11]):
It may be preferable not to dilate upon the circumstances that would satisfy the statutory test, even in terms that mirror the language adopted in the statement of the objects of the Act. The task for the Court is to form a judgment after considering the relevant risk as to whether that risk is unacceptable.
21Her Honour also suggested (at [9]-[10]) that the Court's approach to the question of an unacceptable risk might usefully be informed by the concept of a material risk as that concept is employed in medical negligence.
22In State of New South Wales v Conway [2011] NSWSC 588 Simpson J (at [30]), also without expressing a final view on the issue, stated a preference for the approach taken by R A Hulme J.
23Ultimately, in the final hearing in State of New South Wales v Thomas (Final) [2011] NSWSC 307, in ordering that the defendant be subject to an extended supervision order, RA Hulme J gave the words in s 9(2) their ordinary meaning in the context in which they appeared in the Act and having regard to the objects of the Act.
24In State of New South Wales v Richardson (No 2) [2011] NSWSC 276 Davies J referred to two decisions of the Western Australian Court of Appeal dealing with the applicable legislation in that State. In Director of Public Prosecutions (WA) v Williams [2007] WASCA 206; 176 A Crim R 110 Wheeler JA (with whom Le Miere AJA agreed) said at [63]:
In my view, an "unacceptable risk" in the context of s 7(1) is a risk which is unacceptable having regard to a variety of considerations which may include the likelihood of the person offending, the type of sexual offence which the person is likely to commit (if that can be predicted) and the consequences of making a finding that an unacceptable risk exists. That is, the judge is required to consider whether, having regard to the likelihood of the person offending and the offence likely to be committed, the risk of that offending is so unacceptable that, notwithstanding that the person has already been punished for whatever offence they may have actually committed, it is necessary in the interests of the community to ensure that the person is subject to further control or detention.
25Davies J also referred to the approach adopted by Steytler P and Buss JA in Director of Public Prosecutions (WA) v GTR [2008] WASCA 187; 198 A Crim R 149 at [27], who relevantly said:
The word 'unacceptable' necessarily connotes a balancing exercise, requiring the court to have regard, amongst other things, for the nature of the risk (the commission of a serious sexual offence, with serious consequences for the victim) and the likelihood of the risk coming to fruition, on the one hand, and the serious consequences for the offender, on the other, if an order is made (either detention, without having committed an unpunished offence, or being required to undergo what might be an onerous supervision order). As John Fogarty points out, albeit in a rather different context (Unacceptable risk - A return to basics (2006) 20 AJFL 249, 252), the advantage of the phrase 'unacceptable risk' is that 'it is calibrated to the nature and degree of the risk, so that it can be adapted to the particular case ... '.
26In applying the s 9(2) test Davies J said (at [90)]:
Two things seem to me significant when assessing the evidence and the likelihood of re-offending. The first is the higher standard of proof imposed by the words "a high degree of probability". The second is the notion that "unacceptable risk" involves a balancing exercise between the commission of a serious sexual offence and the likelihood of that risk coming to fruition on the one hand, and the serious consequences for the Defendant either because he will be detained beyond the period of his sentence although he has not committed any further offence or he will be subject to an onerous supervision order, on the other hand. It is because of that balancing exercise that it is open to the court to be satisfied to a high degree of probability that there is an unacceptable risk but that the result of that finding (either a continuing detention order or a supervision order) may vary in a given situation. That is also because s 17(3) provides for the further assessment that if the court is satisfied to a high degree of probability that the offender poses an unacceptable risk a supervision order will not be adequate to meet the risk.
27Davies J concluded that the defendant posed an unacceptable risk of committing a serious sex offence even though he had committed only one (albeit very violent) sexual offence.
28In this case, adopting the approach of RA Hulme J in the final hearing of State of New South Wales v Thomas , I am satisfied to a high degree of probability that the defendant poses an unacceptable risk of committing a serious sex offence if not kept under supervision such as to justify the making of the order for his extended supervision in the community upon his release. In coming to that view, I give particular weight to the fact that the defendant offended against s 11 of the Summary Offences Act not only in breach of his parole but in circumstances where he was aware of the Attorney General's intention to apply for an extended supervision order and whilst he was awaiting a psychiatric assessment for that purpose. In addition, I have taken into account each of the matters listed in s 9(3) of the Act and have given particular weight to the following matters.