"The demanding nature of the test is in no way lessened in circumstances where there are the (sic) potential for difficult factual and legal issues to arise. Rather, as the decision in Webster made clear, it is heightened: see also Wickstead & Ors v Browne (1992) 30 NSWLR 1 and Esanda Finance Corp Ltd v Peat Marwick Hungerfords (1997) 188 CLR 241."
(b) referred [at 29] with approval to the observations emphasising the need for caution in emerging areas of the law as noted by Master Allen as he then was, in Hospitals Contribution Fund of Australia v Hunt (1984) 44 ALR 365 at 373-4, in a passage cited with approval by Badgery-Parker J in Gibson v Parkes District Hospital (1991) 26 NSWLR 9 at 35/36:
"...It is not by any means rare in the history of the development of the common law that a high appellate court, in enunciating a novel development in the law, albeit one avowedly based on a miscellany of old cases, has chosen to use general words of imprecise limits in meaning to facilitate the arrival, in later cases, of the final form of the development without the need to overrule what earlier had been stated. That being so I am of opinion that a court at first instance should be particularly astute not to risk stifling the development of the law by summarily throwing out of court actions in respect of which there is a reasonable possibility that it will be found, in the development of the law, still embryonic, that a cause of action does lie. The risk of injustice to the plaintiff, which summary termination of his claim would entail, is real. One cannot predict, with firm assurance, what the future holds as the final formulation of the new development."
(c) cited [at 30] with approval, NRMA Insurance Ltd v A W Edwards Pty Ltd , NSWCA 11 November 1994, where the Court of Appeal reversed a decision of Cole J (as he then was) in a case that was likely to turn upon developing doctrine, so as to allow the action to continue. Kirby P, with whom Powell JA agreed, said (at p7):
"... the more complex and arguable is the legal point, and the more dependent it may seem to be upon debatable factual premises, the less likely is it that the peremptory relief sought by a party will be appropriate to the circumstances of the case, particularly where it would have the consequence of terminating proceedings altogether or terminating them forever against one party."
(d) observed [at 35] that:
"The strike out power is not appropriate in a case where the issue primarily relates to a conflict as to matters of fact or of credit, notwithstanding that one may have a strong prima facie view as to the ultimate result: Sidebottom v Cureton (1937) 54 WN (NSW) 88, Bank of New South Wales v Murray (1963) 80 WN (NSW) 272 and Spellson v George (1992) 26 NSWLR 666 at 678 per Young AJA, observations made in relation to SCR Pt13 r5, but equally applicable to SCR Pt15 r26."
The issues
11 During the exchange of submissions in relation to the strike out application the plaintiffs determined that they would not press the parts of the pleading alleging a joint enterprise involving each of Gen Re and Guy Carpenter.
12 Without being exhaustive the following remaining matters were addressed in the extensive submissions: