56 Finally, with respect to the question of prejudice generally, the defendant submitted that her Honour did not fall into any relevant error in taking into account, in the exercise of her discretion, that the defendant had suffered prejudice by reason of having obtained judgment on 5 July 2005 but had not received the moneys due and owing or that the defendant had been called upon unnecessarily to incur legal fees and to expend time in defending himself in the District Court.
57 The defendant submitted that the plaintiff's notice of motion should be dismissed with costs.
Consideration
58 It is uncontroversial that in order to succeed the plaintiff must establish that her Honour made an error in exercising her discretion. In this regard it is, in general terms, necessary for the plaintiff to demonstrate that her Honour acted upon a wrong principle, allowed extraneous or irrelevant matters to guide or affect her, made factual mistakes, or failed to take into account some material consideration.
59 The plaintiff's argument with respect to her Honour's interpretation of s 184(4) of the Act should be dealt with first. As will by now be apparent, the plaintiff contended that her Honour formed the view, contrary to authority, that s 184(4) always operated so that any oral costs agreement between the plaintiff and the defendant would be void. According to this argument, that error so fatally infected the exercise of her Honour's discretion that it should be set aside. One view of the authorities suggests that oral costs agreements are not wholly void and that any discretion exercised upon the basis that they are is erroneous.
60 There is no doubt that, taken alone, the penultimate sentence in par [37] of her Honour's judgment gives the impression that she formed that few of the operation of the section. However, as the defendant, in my opinion correctly, points out, her Honour's description of the plaintiff's chances of success on appeal as "slim" is inconsistent with the notion that she treated s 184(4) as operating in that way. It seems to me that a fair reading of her Honour's reasons must incorporate a reference to her view that the dispute concerning the existence or otherwise of the alleged oral agreement depended upon the credibility of witnesses and the need for that to be resolved by the giving of evidence and cross-examination in a court. Her Honour was made aware of the competing versions of this issue and must in my opinion be taken to have formed her view that the plaintiff's chances were "slim" having regard to that competition. The burden of the plaintiff's submission in this regard is ultimately that her Honour erroneously formed the view that the plaintiff had no chance of relying upon the alleged oral agreement. However, it is not possible to read her Honour's judgment in so limited a fashion.
61 This issue is also connected with what occurred during the costs assessment proceedings. It does not appear to be in dispute that resolution of the existence or otherwise of the alleged oral agreement was beyond the jurisdiction of the costs assessor or, even if it were not, that the costs assessor had unambiguously indicated his disinclination to have anything to do with the issue. According to the defendant, the plaintiff should timeously have taken steps to have the matter adjudicated in an appropriate forum. This was not done, and no application for a stay so that it could be done was made to the costs assessor or to a court. In my opinion, the plaintiff has not demonstrated that her Honour fell into error in forming the view that the costs assessor did not have the power to resolve the dispute, or in treating the plaintiff's failure somehow promptly to bring the matter to a conclusion as counting against it in her overall assessment of the importance of the various reasons for delay.
62 There is no doubt that her Honour expressed the view that the delay was lengthy. Whatever adjective may have been used to describe it, the description ought properly to have been chosen as a reflection of a balanced assessment of what caused the delay. The plaintiff's complaint is that in performing that exercise her Honour failed properly or adequately to give sufficient weight to those factors that favoured the plaintiff. However, in my opinion, it is difficult to form a view that contributions to delay were not equally shared between the plaintiff and the defendant. It is not possible to point to any factor causing delay that unarguably outweighed any other or others.
63 The same may be said with respect to her Honour's comparison of competing prejudice. The plaintiff argued that there was little prejudice to the defendant if forced to confront the existence an agreement that was always in contest, whereas the prejudice to the plaintiff was, on the contrary, manifest and complete. Her Honour would appear clearly to have formed the view that inconvenience and further delay did amount to prejudice that was at least as significant as that which confronted the plaintiff. The prospects of success that her Honour calculated cannot be disregarded in this assessment of the plaintiff's position. It is not possible to conclude that the view taken by her Honour was not open to her or arrived at as the result of extraneous or irrelevant considerations or error of principle.
64 The essence of a search for error in the exercise of discretion is the search for a factor or a series of factors upon or about which informed minds should not reasonably differ. The application of wrong principle, surrender to the influence of extraneous or irrelevant matters, the making of factual mistakes, or a failure to take into account some material consideration are examples of such matters. Beyond the demonstration of such matters, the plaintiff cannot complain about the decision that her Honour reached. In my view, the plaintiff's complaints are all directed to the opinions that her Honour formed, about which there is obviously scope for difference. The plaintiff has not to my mind demonstrated illegitimacy in the process employed by her Honour in arriving at those opinions.
Conclusion
65 In my opinion the plaintiff's notice of motion should be dismissed with costs.