Likewise, a successful defendant in summary proceedings has a reasonable expectation of obtaining an order for the payment of his or her costs because it is just and reasonable that the informant should reimburse him or her for liability for costs which have been incurred in defending the prosecution. Consequently, a magistrate ought not to exercise his or her discretion against a successful defendant on grounds unconnected with the charge or the conduct of the litigation. The fact that the informant has acted in good faith in the public interest or may have to meet the costs out of his or her own pocket is not a ground for depriving the defendant of his or her costs. Speaking generally, before a court deprives a successful defendant in summary proceedings of his or her costs, it will be necessary for the informant to think that a charge could be successfully brought against the defendant or that the conduct of the defendant occasioned unnecessary expense in the institution or conduct of the proceedings. cf. Ritter v. Godfrey (24); Sunday Times Newspaper Co. Ltd. v. McIntosh (25); Redden v. Chapman (26); Schaftenaar (27); see also McEwen v. Siely (28). Thus, non-disclosure to investigatory police of a tape recording later successfully used in cross-examination of the informant's witnesses may be a relevant matter to be taken into account in determining whether the defendant should be awarded costs: cf. Reg. v. Dainer; Ex parte Milevich (29)."
(22) (1975) 11S.A.S.R. 266, at p. 274
(23) (23) [1927] A.C. 732, at pp. 811-812.
(24) [1920] 2K.B. 47, at pp. 53, 54-60, 66
(25) (1933) 33 S.R. (N.S.W.) 371, at p.377
(26) (1949) 50 S.R. (N.S.W.) 24, at p.25
(27) (1975) 11 S.A.S.R., at pp. 274-275.
(28) (1972) 21 F.L.R. 131, at p. 136
(29) (1988) 91 F.L.R. 33.
32. Applying these principles for the exercise of the statutory discretion to the present case, the starting point of the process of reasoning is that the successful Defendant has a reasonable expectation of obtaining a costs order against the Prosecutor. The next question is whether there is anything in the conduct of the Defendant, either after the commission of the offence charged or in the course of the litigation which would disentitle the Defendant to the fulfilment of that reasonable expectation. This question can be further subdivided as follows:
(i) Is there anything in the conduct of the Defendant which justifies the conclusion that the Defendant brought the prosecution upon itself?
(ii) Did the Defendant conduct its defence in such a manner as to prolong the trial unreasonably?
(iii) Were there issues at the trial upon which the Defendant failed?
33. An affirmative answer to question (i) may justify withholding a costs order in favour of the Defendant and an affirmative answer to either question (ii) of (iii) may justify an award of only a proportion of the Defendant's costs.