200. Whether recovery should be denied by reference to public policy depends on the relationship between the activity causing the damage and the particular criminal activity then in progress or prospect. As their Honours stated at 312, Just as it would, in our view, be inappropriate to weigh the conflicting demands of the criminal activity for a driver and a passenger engaged in driving around suburban streets looking for a person or place to rob, so here the inappropriateness of the process of weighing and adjusting the conflicting demands is underlined by the very serious nature of the criminal activity involved. The majority, Neaves, Burchett and Whitlam JJ, regarded Gala v Preston as requiring the plaintiff to show, once it is proved that he was engaged in a conspiracy at the time to stage an accident of the kind of which he complained, that, 325, ... the plaintiff nevertheless sustained his injuries by the negligence of the defendant, and not as a result of their agreement ... Even if the collision had been adventitious rather than staged, their Honours stated, at 331, that a correct application of the majority view in Gala v Preston would, nevertheless, deny recovery. They said, Common to the joint judgment and each of the other judgments is the view that the previous case law, which the joint judgment restated in terms of proximity, Brennan and Dawson JJ explained, and Toohey J substantially accepted as it stood, did lay down a rule providing a defence applicable to cases of joint participation in serious crime. While the explanations of the rule differed, its effect in cases such as the present was consistently stated in terms which would require the allowance of the appeal [thus denying recovery]. In like manner, it is accepted that not every illegality will avoid a contractual arrangement, see Barac v Farnell [1994] FCA 1389; (1994) 53 FCR 193. Nevertheless, public policy may require modification or non- enforcement of such an arrangement, see Nelson v Nelson [1995] HCA 25; (1995) 184 CLR 538. That is a similar approach, it seems to me, to the situation where an alleged tort involves or arises out of unlawful activity.